Thanks. I am now at 2.6.19-1.2895.fc6 and updating, yet again. The kernel I am downloading is kernel-2.6.19-1.2911.fc6. When will Fedora be up to the 2.6.20 kernel? Your explanation makes sense. I have a lot of experience with race conditions in threads and can relate to what it could do at the kernel level..... Cheers, -- Wade Hampton