Hi, I'm able to lock up the machine using the test app from openobex and kernel 2.6. I've verified this on 2.6.0-test9 and -test11, and 2.6.1-rc1 -- all with and without the -mh2 patches. The obex_test app has a bug when a transfer is cancelled, which in turn seems to make the kernel bug happen. I presume this is because it leaves the bluetooth devices in an odd state. To repeat this, put obex_test into server mode, obex_test -b ff:ff:ff > s send a file, cancel the transfer, then > s again. Send another file, obex_test crashes. Repeat the whole thing until you get a machine lockup. Note there are no kernel errors, the system appears to go into a tight loop. I attach my kernel .config. I've tried with both CSR and Broadcom based USB dongles. I am not running SMP or PREEMPT. -- Edd