panic when inserting USB drive into 5.2.1R machine

[Steve Hodgson]

Hi,

I've just bought a new USB flash drive and it causes a panic on my machine. 
The motherboard is an nForce2 (dmesg can be sent to anyone who requests it).

The offending messages are:

===On Insertion===
Aug 21 14:22:37 congo kernel: umass0: vendor 0x0ef8 PANRAM, rev 1.10/1.00, 
addr 3
Aug 21 14:22:42 congo kernel: umass0: Invalid CSW: tag 3 should be 1
Aug 21 14:22:42 congo kernel: umass0: Invalid CSW: tag 1 should be 2
Aug 21 14:22:42 congo kernel: umass0: Invalid CSW: tag 1 should be 3

===Panic message====
savecore: reboot after panic: ohci_add_done: addr 0x1d074f60 not found

===GDB backtrace===
#0  doadump () at /usr/src/sys/kern/kern_shutdown.c:240
#1  0xc04f6fda in boot (howto=256) at /usr/src/sys/kern/kern_shutdown.c:372
#2  0xc04f7358 in panic () at /usr/src/sys/kern/kern_shutdown.c:550
#3  0xc048ea08 in ohci_add_done (sc=0xc4823000, done=487018336) 
at /usr/src/sys/dev/usb/ohci.c:1320
#4  0xc048e7d9 in ohci_intr1 (sc=0xc4823000) 
at /usr/src/sys/dev/usb/ohci.c:1212
#5  0xc048e65f in ohci_intr (p=0xc4823000) at /usr/src/sys/dev/usb/ohci.c:1142
#6  0xc04e25d8 in ithread_loop (arg=0xc204c880) 
at /usr/src/sys/kern/kern_intr.c:544
#7  0xc04e132f in fork_exit (callout=0xc04e2410 <ithread_loop>, arg=0x0, 
frame=0x0) at /usr/src/sys/kern/kern_fork.c

The only thing i've come across when looking through the archives is 
http://lists.freebsd.org/pipermail/freebsd-current/2004-January/018826.html, 
which isn't too helpful, and since i've used other USB flash drives before 
with no problems I would doubt a chipset error.

Any help is appreciated. Although I haven't yet upgraded to 5.3-BETA I am 
considering it to see if this fixes it

Steve