Most recent kernel where this bug did not occur:
Distribution: Ubuntu 7.04
Hardware Environment: Athlon 64 X2, 2GB Ram, 320 SATA HD, Nvidia 7300GS pci-e (yes, this problem happened well before I loaded any binary kernel modules)
Software Environment: Ubuntu 7.04
Problem Description: System will not recognize USB devices plugged into my pci add-on card, or firewire devices.  Also, after a few minutes of use, system becomes unstable with random freezes.
Exerps from dmesg:
Oct 24 23:22:31 malcolm kernel: Inspecting /boot/System.map-2.6.20-15-generic
Oct 24 23:22:31 malcolm kernel: Loaded 24975 symbols from /boot/System.map-2.6.20-15-generic.
Oct 24 23:22:31 malcolm kernel: Symbols match kernel version 2.6.20.
Oct 24 23:22:31 malcolm kernel: No module symbols loaded - kernel modules not enabled. 
Oct 24 23:22:31 malcolm kernel: [    0.142935] PCI: Cannot allocate resource region 2 of device 0000:01:12.0
Oct 24 23:22:31 malcolm kernel: [    0.142938] PCI: Cannot allocate resource region 0 of device 0000:01:13.0
Oct 24 23:22:31 malcolm kernel: [    0.142939] PCI: Cannot allocate resource region 1 of device 0000:01:13.0
Oct 24 23:22:31 malcolm kernel: [    0.142941] PCI: Cannot allocate resource region 2 of device 0000:01:13.0
Oct 24 23:22:31 malcolm kernel: [    0.142944] PCI: Cannot allocate resource region 0 of device 0000:01:14.0
Oct 24 23:22:31 malcolm kernel: [    0.142946] PCI: Cannot allocate resource region 1 of device 0000:01:14.0
Oct 24 23:22:31 malcolm kernel: [    0.142948] PCI: Cannot allocate resource region 2 of device 0000:01:14.0
Oct 24 23:22:31 malcolm kernel: [    0.142951] PCI: Cannot allocate resource region 0 of device 0000:01:15.0
Oct 24 23:22:31 malcolm kernel: [    0.142953] PCI: Cannot allocate resource region 1 of device 0000:01:15.0
Oct 24 23:22:31 malcolm kernel: [    0.142955] PCI: Cannot allocate resource region 2 of device 0000:01:15.0
Oct 24 23:22:31 malcolm kernel: [    0.142957] PCI: Cannot allocate resource region 0 of device 0000:01:16.0
Oct 24 23:22:31 malcolm kernel: [    0.142959] PCI: Cannot allocate resource region 1 of device 0000:01:16.0
Oct 24 23:22:31 malcolm kernel: [    0.142961] PCI: Cannot allocate resource region 2 of device 0000:01:16.0
Oct 24 23:22:31 malcolm kernel: [    0.142964] PCI: Cannot allocate resource region 0 of device 0000:01:17.0
Oct 24 23:22:31 malcolm kernel: [    0.142966] PCI: Cannot allocate resource region 1 of device 0000:01:17.0
Oct 24 23:22:31 malcolm kernel: [    0.142967] PCI: Cannot allocate resource region 2 of device 0000:01:17.0
Oct 24 23:22:31 malcolm kernel: [    0.142970] PCI: Cannot allocate resource region 0 of device 0000:01:18.0
Oct 24 23:22:31 malcolm kernel: [    0.142972] PCI: Cannot allocate resource region 1 of device 0000:01:18.0
Oct 24 23:22:31 malcolm kernel: [    0.142974] PCI: Cannot allocate resource region 2 of device 0000:01:18.0
Oct 24 23:22:31 malcolm kernel: [    0.142977] PCI: Cannot allocate resource region 0 of device 0000:01:19.0
Oct 24 23:22:31 malcolm kernel: [    0.142979] PCI: Cannot allocate resource region 1 of device 0000:01:19.0
Oct 24 23:22:31 malcolm kernel: [    0.142980] PCI: Cannot allocate resource region 2 of device 0000:01:19.0
Oct 24 23:22:31 malcolm kernel: [    0.142983] PCI: Cannot allocate resource region 0 of device 0000:01:1a.0
Oct 24 23:22:31 malcolm kernel: [    0.142985] PCI: Cannot allocate resource region 1 of device 0000:01:1a.0
Oct 24 23:22:31 malcolm kernel: [    0.142987] PCI: Cannot allocate resource region 2 of device 0000:01:1a.0
Oct 24 23:22:31 malcolm kernel: [    0.142990] PCI: Cannot allocate resource region 0 of device 0000:01:1b.0
Oct 24 23:22:31 malcolm kernel: [    0.142992] PCI: Cannot allocate resource region 1 of device 0000:01:1b.0
Oct 24 23:22:31 malcolm kernel: [    0.142993] PCI: Cannot allocate resource region 2 of device 0000:01:1b.0
Oct 24 23:22:31 malcolm kernel: [    0.142996] PCI: Cannot allocate resource region 0 of device 0000:01:1c.0
Oct 24 23:22:31 malcolm kernel: [    0.142998] PCI: Cannot allocate resource region 1 of device 0000:01:1c.0
Oct 24 23:22:31 malcolm kernel: [    0.143000] PCI: Cannot allocate resource region 2 of device 0000:01:1c.0
Oct 24 23:22:31 malcolm kernel: [    0.143003] PCI: Cannot allocate resource region 0 of device 0000:01:1d.0
Oct 24 23:22:31 malcolm kernel: [    0.143005] PCI: Cannot allocate resource region 1 of device 0000:01:1d.0
Oct 24 23:22:31 malcolm kernel: [    0.143006] PCI: Cannot allocate resource region 2 of device 0000:01:1d.0
Oct 24 23:22:31 malcolm kernel: [    0.143009] PCI: Cannot allocate resource region 0 of device 0000:01:1e.0
Oct 24 23:22:31 malcolm kernel: [    0.143011] PCI: Cannot allocate resource region 1 of device 0000:01:1e.0
Oct 24 23:22:31 malcolm kernel: [    0.143013] PCI: Cannot allocate resource region 2 of device 0000:01:1e.0
Oct 24 23:22:31 malcolm kernel: [    0.143016] PCI: Cannot allocate resource region 0 of device 0000:01:1f.0
Oct 24 23:22:31 malcolm kernel: [    0.143018] PCI: Cannot allocate resource region 1 of device 0000:01:1f.0
Oct 24 23:22:31 malcolm kernel: [    0.143020] PCI: Cannot allocate resource region 2 of device 0000:01:1f.0
Oct 24 23:22:31 malcolm kernel: [    0.201831] NET: Registered protocol family 8
Oct 24 23:22:31 malcolm kernel: [    0.201832] NET: Registered protocol family 20
Oct 24 23:22:31 malcolm kernel: [    0.202259] pnp: 00:01: ioport range 0x1000-0x107f could not be reserved
Oct 24 23:22:31 malcolm kernel: [    0.202261] pnp: 00:01: ioport range 0x1080-0x10ff has been reserved
Oct 24 23:22:31 malcolm kernel: [    0.202264] pnp: 00:01: ioport range 0x1400-0x147f has been reserved
Oct 24 23:22:31 malcolm kernel: [    0.202266] pnp: 00:01: ioport range 0x1480-0x14ff could not be reserved
Oct 24 23:22:31 malcolm kernel: [    0.202268] pnp: 00:01: ioport range 0x1800-0x187f has been reserved
Oct 24 23:22:31 malcolm kernel: [    0.202271] pnp: 00:01: ioport range 0x1880-0x18ff has been reserved

and

Oct 24 23:22:31 malcolm kernel: [    3.656000] ACPI: PCI Interrupt Link [APCM] enabled at IRQ 21
Oct 24 23:22:31 malcolm kernel: [    3.656000] ACPI: PCI Interrupt 0000:01:00.0[A] -> Link [APCM] -> GSI 21 (level, low) -> IRQ 18
Oct 24 23:22:31 malcolm kernel: [    3.656000] PCI: Setting latency timer of device 0000:01:00.0 to 64
Oct 24 23:22:31 malcolm kernel: [    3.804000] ohci1394: fw-host0: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    3.860000] ohci1394: fw-host0: Runaway loop while stopping context: ...
Oct 24 23:22:31 malcolm kernel: [    3.916000] ohci1394: fw-host0: Runaway loop while stopping context: ...
Oct 24 23:22:31 malcolm kernel: [    3.968000] ohci1394: fw-host0: Runaway loop while stopping context: ...
Oct 24 23:22:31 malcolm kernel: [    4.020000] ohci1394: fw-host0: Runaway loop while stopping context: ...
Oct 24 23:22:31 malcolm kernel: [    4.020000] ohci1394: fw-host0: OHCI-1394 165.165 (PCI): IRQ=[18]  MMIO=[fddc1000-fddc17ff]  Max Packet=[65536]  IR/IT con
texts=[32/32]
Oct 24 23:22:31 malcolm kernel: [    4.020000] ohci1394: fw-host0: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    4.024000] ohci1394: fw-host0: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    4.028000] ohci1394: fw-host0: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    4.032000] ohci1394: fw-host0: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    4.036000] ohci1394: fw-host0: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    4.040000] ohci1394: fw-host0: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    4.044000] ohci1394: fw-host0: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    4.048000] ohci1394: fw-host0: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    4.052000] ohci1394: fw-host0: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    4.056000] ohci1394: fw-host0: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    4.060000] ohci1394: fw-host0: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    4.064000] ohci1394: fw-host0: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    4.068000] ohci1394: fw-host0: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    4.072000] ohci1394: fw-host0: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    4.076000] ohci1394: fw-host0: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    4.080000] ohci1394: fw-host0: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    4.084000] ohci1394: fw-host0: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    4.088000] ohci1394: fw-host0: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    4.092000] ohci1394: fw-host0: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    4.096000] ohci1394: fw-host0: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    4.100000] ohci1394: fw-host0: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    4.104000] ohci1394: fw-host0: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    4.108000] ohci1394: fw-host0: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    4.112000] ohci1394: fw-host0: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    4.116000] ohci1394: fw-host0: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    4.120000] ohci1394: fw-host0: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    4.124000] ohci1394: fw-host0: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    4.128000] ohci1394: fw-host0: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    4.132000] ohci1394: fw-host0: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    4.136000] ohci1394: fw-host0: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    4.140000] ohci1394: fw-host0: Serial EEPROM has suspicious values, attempting to setting max_packet_size to 512 bytes
Oct 24 23:22:31 malcolm kernel: [    4.140000] ACPI: Unable to derive IRQ for device 0000:01:01.0
Oct 24 23:22:31 malcolm kernel: [    4.140000] ACPI: PCI Interrupt 0000:01:01.0[A]: no GSI - using IRQ 11
Oct 24 23:22:31 malcolm kernel: [    4.288000] ohci1394: fw-host1: Set PHY Reg timeout [0xffffffff/0x00004000/100]
Oct 24 23:22:31 malcolm kernel: [    4.348000] ohci1394: fw-host1: Runaway loop while stopping context: ...
Oct 24 23:22:31 malcolm kernel: [    4.404000] ohci1394: fw-host1: Runaway loop while stopping context: ...
Oct 24 23:22:31 malcolm kernel: [    4.464000] ohci1394: fw-host1: Runaway loop while stopping context: ...

Steps to reproduce: Unplugging the add-on card changed nothing.