Hello All, Can someone point me out or explain the technical details of this kernel panic: sleeping thread (tid 100093, pid 2676) owns nonsleepable lock panic: sleeping thread -- -- Is this caused by incorrect use of mutex or semaphores? Is this related to kernel scheduling? Can this be addressed at the user process? I've tried looking throught the freebsd mailing list archives and documentations but coudn't find a real good answer to solve or prevent this problem. Im using freebsd 6.1 with SMP enabled on a Xeon dual core hardware. The system has several busy applications running, But the load average is very minimal, around 8.55 and no process hogging the CPU. So I expect my system should be running smoothly without in problem. I appreciate any help. Thanks a lot, Mon