network connections keep dropping

view story

http://forums.fedoraforum.org – I upgraded from F17 to F18 this evening using the FedUp tool. Everything went smoothly and I didn't have any problems with the upgrade process, but now that I'm up and running on F18 my wired and wireless connections keep dropping for no apparent reason. I haven't found a lot of useful information in /var/log/messages as to why, but I've found that reseating the cable on the wired connection or turning my wireless off/on with the F12 button can get the networking back online. I didn't have any of these issues with any previous install of Fedora 16 or 17 on this laptop, an HP Pavilion d (HowTos)