kwachon;
I have the same problem with my yahoo.ca as home page. When your home page is up, do you see a yellow triangle with an exclamation mark in it at the LH side of the progress bar, down at the lower LH of the screen. If you do and you double click on it, what does it say? If I refresh my home page, the message clears but as soon as I move to another site and return to the home page, the message is back.
As well, when you do a scan using Hijack do you get two RO items that end in "Main, Local Page ="? These will be close to the top of the scan.
This is a self replicating item in the registry possibly from a home page re-director.
My yellow warning triangle shows a problem with script writing but I have no idea where it came from and I spent hours with the Microsoft IT people trying to resolve the issue. I did the same as you and removed IE7 but the same warning is there with IE6. I am preparing to dump the OS and reload. Microsoft says it is not a big problem but it is, as it has a slowdown effect on the system.
Regards
carholme