Couple of days ago, I'd get random cases where I'll have a bunch of tabs open in the Firefox browser ... everything working fine (always has in the past), then out of no where I lost all connectivity to the internet. If I clicked on a tab, it would just sit there and spin and never re-connect ... zero connectivity to the internet at that point. I tried my other browsers (Explorer and Chrome) at the point thinking it might be Firefox, but they were also non-functional. Closing the browses and re-opening them didn't help. If I rebooted my computer, my internet functionality would return most of the time ... but sometimes it didn't. I talked with my brother who suggested I change my network settings to use the Google public DNS server addresses of 126.96.36.199 and 188.8.131.52 thinking my internet provider's server might be having intermittent issues. I changed the DNS server addresses as he suggested, and all seemed to run fine for about 10 hours, then I lost network to the internet again. Again, rebooting the computer brought it back. So, anyone else have ideas of what might be going on? Maybe the network interface card is going bad? Maybe I should open up the box and ensure the network card is seated well, maybe remove and re-seat it? Here's a screen shot of the DNS setting change that seemed to work, but apparently that wasn't the fix. I'm running Windows 7 and it's all up to date.