dunno why your IE is responding so slowly. only reason i can think of is cache needs to be cleared, your machine is bogged down with spyware, or your machine got infected and is now a zombie and clicking ads, etc in background (thus earning $ for the zombie master).
You'd be amazed how many machines out there are full of spyware and/or have been made into zombies
IE has been working fine for me on auctiva, and i'm on dialup.
try clearing your cache and scanning your machine with the various anti-spyware and antivirus tools in my sig area (after you download them, update them before scanning). SpyBot S&D, AVG, and eWido are all great tools and free