USB disappeared on Mandrake Limited Edtion 2005

I don't know where to go from this point, so maybe someone can be kind enough to help.

USB was functioning, but now it is not - can't use my memory stick like I could.

The error file (kernal - errors) is as follows:

Aug 11 20:06:23 localhost kernel: PCI: Cannot allocate resource region 3 of device 0000:00:00.0 Aug 11 20:06:23 localhost kernel: audit(1123790725.441:0): initialized Aug 11 20:06:23 localhost kernel: ohcihcd 0000:00:13.0: Found HC with no IRQ. Check BIOS-PCI 0000:00:13.0 setup! Aug 11 20:06:23 localhost kernel: ohcihcd 0000:00:13.1: Found HC with no IRQ. Check BIOS-PCI 0000:00:13.1 setup! Aug 11 20:06:23 localhost kernel: ehcihcd 0000:00:13.2: Found HC with no IRQ. Check BIOS-PCI 0000:00:13.2 setup! Aug 11 20:06:23 localhost kernel: ISICOM: No valid card configuration. Driver cannot be initialized... Aug 11 20:06:23 localhost kernel: ohci1394: Failed to allocate shared interrupt 0 Aug 11 20:18:05 localhost kernel: PCI: Cannot allocate resource region 3 of device 0000:00:00.0 Aug 11 20:18:05 localhost kernel: audit(1123791423.917:0): initialized Aug 11 20:18:05 localhost kernel: ohcihcd 0000:00:13.0: Found HC with no IRQ. Check BIOS-PCI 0000:00:13.0 setup! Aug 11 20:18:05 localhost kernel: ohcihcd 0000:00:13.1: Found HC with no IRQ. Check BIOS-PCI 0000:00:13.1 setup! Aug 11 20:18:05 localhost kernel: ehcihcd 0000:00:13.2: Found HC with no IRQ. Check BIOS-PCI 0000:00:13.2 setup! Aug 11 20:18:05 localhost kernel: ISICOM: No valid card configuration. Driver cannot be initialized... Aug 11 20:18:05 localhost kernel: ohci1394: Failed to allocate shared interrupt 0

Sorry about any bad wrapping - the date is the start of each line.

Where so I go from here?

Thanks for any pointers

Stephen