[SOLVED] Network connection drops on eth0

[supernano]

I have my pi connected via Ethernet to my network. I have been using it with no problems for long time but since last week, the network connection drops after every few minutes. At first instance I can wait à short while and it comes back, but after a few times eventually it drops for good and I need tho restart.
I tried rolling back and reinstalling xbian (albeit restoring the home folder) and the problem still persists.
I was wondering if there was some way to monitor the processes using the network, or if anyone has any other ideas.
I've seen similar threads on the forum but didn't really see any solutions.
Let me know if there's any log I can provide to help troubleshoot.
Thanks!