hi, I have a problem since (i tought) i upgrade my kernel to the last release... When i launch specific program it show me an error : "segmentation fault" I have 2 questions: 1) Is it possible to revert to my previous kernel version,and if yes, how to? (i download from a site kernel.i686 2.6.15-1.1833_FC4.rpm but when i try to install it it fail...) 2) How have to do to trace the error program & find what is wrong... I run Fedora core 4 on a pentium 3 proc. The actual kernel installed is 2.6.16-1.2108_FC4. Best regards, Guillaume