I use Windows Live Mail and have two mail accounts setup, Hot mail and BT. When I open a Hot mail message there is a noticeable delay (about a second or two) where as the BT mails open instantly. I have another PC with the same setup and the Hot mail messages open instantly. I can’t see any difference in the configuration. Any ideas.
Are the two computers exact the same? In memory? Internet connection? Maybe the first computer is slower and more 'contaminated'. Try to clean up your PC and your browser cache.
You should clear your cached files, objects and cookies and your browser and then test again. A lot of slowness issues is browser related to out of date cached objects.