My browsers have been crashing all day!

something weird has been happening today. All of my web browsers have been consistently crashing. FF, Safari, and Chrome. Each of them would consistently crash after awhile. Each of them has crashed at least 8 times today. So weird. Is my computer about to go bonkers on me!!! I decided to post this after FF crashed on me while I did nothing. Like literally I wasn't opening a window or anything when the wheel of death came. I'm not doing any extraordinary downloading or browsing either. I'm just on forums, gmail, surf the channel(im on stc only on FF).
Earlier today safari kept crashing with hulu(well twice), then it crashed twice with gmail. FF has been crashing at the drop of a hat and chrome can't even go to a website.

I'm going to restart now and come back.

hmphhhhhhhhhh