The speed issue could also be to do with IE itself. Although my solution will not fully fix the IE issue, what i recommend you do right now is download the Firefox Web Browser from mozilla, you can find it here from its official site: http://www.mozilla.com/firefox/
It looks a little different,works in the same way as IE, but is not prone to the attacks and web page high jacking that IE is. Just using it can help save you from masses of malware and spyware that IE lets into you PC. Highjackers can access IE easily,Firefox is not as much so to manipulate. I only ever recommend using IE for Windows updates as they cant be downloaded using any other browser than IE, the same goes for checking Hotmail accounts, anything really that Microsoft control.
I think you maybe running slow because IE may possibly be High jacked,just not going onto a High jacked page. Try going up to TOOLS>INTERNET OPTIONS>GENERAL TAB and once there, delete all cookies by clicking on the button,if you have a lot of cookies in there,then that will be one reason that you're running slow.Also while there, select delete files,which is right next to the previous option,once clicked it will produce another box where you are able to tick "Delete all offline content" make sure you tick this,it wont be at first,then ok it. The delete may take a min or two if you have alot in there,but thats ok. Try it after and see if thats helped at all.