Windows Mail Is Mental (and Slow)

1) Message rules has a mind of its own. I specify certain mail to be moved to certain folders as they come in - some rules work OK, but others the mail is placed in the wrong folder completely. Not sure yet if this is random or if there is a pattern to it.

2) it is very slow when I try to switch from one folder to another to view the new mail. I often go and browse the internet while waiting for the folder I have selected to finally 'appear'.

I'm also having issues with internet browsing, I tried switching to Mozilla (which has helped some) but still getting issues. Basically it will give me a '404 file not found' error on a website, even tho I the website IS there as I can check on my other computer. Other websites (like ebay) I can get the home page but any attempt to log in gives me "404 not found". I've now managed to get ebay working (either by Mozilla or also I added it to the trusted sites zone), but another website (again placed in my trusted zone) I cannot log in to and even tho I can now get the homepage, the page is just plain text links with no graphics or formatting.