Hello, after we upgraded the kernel on our machine to 2.4.16, one of our clients has been having problems with some of his compiled scripts - they just seemed to have stopped working for no apparent reason. We had him compile under the new kernel, and that did not work. He thought it might be a problem with apache, so we rebuilt that - still no dice. He also said: I kind of believe that the problem may have to do with allocating shared memory (which my database does). I am suspect of this because at times during my development, in the past, the debugger has caused the DB code to hang at the shmem()request. so we were thinking it might be a problem with the kernel... but he tested his scripts on another server running the same kernel and it worked fine. Just wondering if anyone else had encountered something like this before, or if you can think of anything else that might be causing these problems.