Distribution: SuSE 9.2 64Bit and 32Bit
Hardware Environment: ASUS A8N-SLI-DELUXE, AMD 64 3000+
Problem Description:
I have a Seagate USB harddisk drive(160GB). 
If I connect the harddisk, nothing is done.
/var/log/messages after a connect:
Mar  4 14:35:21 tux kernel: ehci_hcd 0000:00:02.1: port 2 reset error -110
Mar  4 14:35:21 tux kernel: hub 2-0:1.0: hub_port_status failed (err = -32)

If I do following steps, everything works fine:
rmmod ehci_hcd
connect the harddisk and wait a bit
modprobe ehci_hcd

I have full speed(30MB/s) and I can work with the harddisk until I restart my
computer.

The same problem occurs with my USB-Stick, the workaround works fine, too.