I use this and Chrome but have Firefox set as my default as it seems faster and also because for some reason i cannot save anymore bookmarks on Chrome, so i decided to mainly use Firefox, suddenly Yahoo has been installing itself over the top of Firefox and it wont uninstall until i have done a Virus scan, i reinstall Firefox and it is ok for a while then fucking Yahoo appears again, think i know why this started again yesterday, i was getting ads popping up everywhere so installed the extension ad block plus which i have used all the time and also use on Chrome, when i added that extension another add block program keeps jumping in with it, can't remember the name, again this has all seemed to start since that last fucking Windows update, i did get a message this morning that i had an update but when i looked there was no update...i think it is either a virus or malware, i have Googled the problem but so far nothing works, i really do not want Yahoo at all and especially not when it thinks it can just install itself on my PC just because it feels like it....really pissed of with Microsoft lately.