I was just having this problem with my network connections, aboutevery hour or so, i need to right click and repair, and everything works fine again.... for a while i couldnt figure out why this was happening all of the sudden, then i finally figured out what was causing this... the problem is from my wireless router, i have a non-wireless D-Link, that i use for 4 of my computers, and i have my wireless Linksys connected to my D-Link so that way one of my computers with a wireless network card would be able to connect to it.
I've had this set up for a while without a problem... But for some reason, it just started disconnecting me from the internet, and if i hit repair network connections it will come back alive. But eventually, it will crash again and i would have to repair it again... It works fine forever when the second router is unplugged.. but i need it to be plugged in, If anybody knows a way around this ssituation, then please help me... Thanks.