I've already posted this on the ubuntuforums with no repsonse so I'm hoping to get something here.
I just installed Ubuntu Feisty Fawn for a mythtv box and everything works great except my usb devices.
This is not a Feisty Fawn issue either since I tried 2 versions of knoppmyth and an edgy install with the same issues.
The wireless usb stick works fine if I plug it in after the boot has completed AND the usb mouse was unplugged during boot. Same with the usb mouse. If I boot with the mouse plugged in I can unplug and the plug it back in and it works but the usb stick will not work at all.

To sum up: I cannot have any usb devices plugged in during boot or my usb wireless stick will not function.
I looked in my /var/log/dmesg (thanks PWill for the info) and found this on a boot with usb devicces plugged in:

[ 59.506620] ehci_hcd 0000:00:1d.7: fatal error
[ 59.510497] ehci_hcd 0000:00:1d.7: HC died; cleaning up
[ 59.510592] usb 4-4: USB disconnect, address 2
[ 59.510599] p54usb: reset failed!
[ 59.510613] prism54usb: probe of 4-4:1.0 failed with error -108
[ 59.511426] usbcore: registered new interface driver prism54usb
[ 62.063112] p54usb: reset failed!
[ 62.063136] prism54usb: probe of 2-2:1.0 failed with error -110
[ 62.063197] usb 2-2: device_add(2-2:1.0) --> -110
[ 62.063256] usb 2-2: USB disconnect, address 2
[ 62.063366] BUG: at drivers/usb/core/driver.c:1166 usb_autopm_do_device()
[ 62.063398] [<e0881235>] usb_autopm_do_device+0xd5/0xe0 [usbcore]
[ 62.063453] [<e087b611>] usb_disconnect+0x121/0x130 [usbcore]
[ 62.063504] [<e087b664>] hub_pre_reset+0x44/0x70 [usbcore]
[ 62.063536] [<e087c182>] hub_thread+0xc2/0xc20 [usbcore]
[ 62.063586] [<c0178ccf>] __fput+0x10f/0x170
[ 62.063626] [<c013b360>] autoremove_wake_function+0x0/0x50
[ 62.063658] [<e087c0c0>] hub_thread+0x0/0xc20 [usbcore]
[ 62.063677] [<c013b1aa>] kthread+0xba/0xf0
[ 62.063688] [<c013b0f0>] kthread+0x0/0xf0
[ 62.063701] [<c0103e43>] kernel_thread_helper+0x7/0x14


This is an old Dell Dimension 2350 if that matters. Is there a way to reset the usb devices after boot with a command?

Thanks for any help!