So, I had a problem with losing my network connection when I updated from: kernel-2.6.14-1.1637_FC4 to kernel-2.6.12-1.1456_FC4 which I reported in bugzilla. When I recently updated to kernel-2.6.14-1.1653_FC4 the problem went away. So, today I yum updated and picked up kernel-2.6.14-1.1656_FC4, and the problem is back! What's going on?!?!