Crap thought that text was all the characters I was allotted, not just the title. Anyway I wouldn't have even posted this if you guys would have allowed me to reply to the already existing thread I found through google. Said about 20 or so people had the same problem and no one found the contributor's answer useful, including myself. Anyway, I use Firefox, because it is one of two (other being internet explorer) that Trend Micro's security package includes protection with. Same with spyware blaster which I also use but Trend Micro is the deal breaker. Also I like Firefox 4 and your ad blocker is better than google chrome's. However if I continue to have problems with clearing my browser history it is back to Opera and Google Chrome for me. IObit Security supports both of them, it also seems to be the best security system I have ever come across, I will just pay for their subscription and stop using Trend Micro. This is a very big problem I hope it is being addressed. Only addon I have is your ad blocker. Also this is completely on your end, not ours. I am the perfect test, my computer is brand new, and by brand new I mean I just started using it the other day, the same day my firefox browser kept crashing as I attempted to clear my browsing history. Windows 7, 8GBs RAM, AMD athlon II quad core 2.90 GHz Can't even clear an hours worth of browsing history without firefox crashing.