I believe they were very wise 'suggestions' by somebody who has obviously been around the various p2p forums. Pity more people didn't look after their computers & give them periodic check ups. I mean it's like running a car & never giving it a service (or worse.)
Perhaps this advice will not solve this particular issue. But since every windows machine is 'so' different & windows can be 'so' affected by the smallest of differences ... it's not always easy to pinpoint a problem.
I could be a smartazz & suggest everybody get a mac but I don't think anybody would be impressed with such a light-hearted jokeful suggestion, particularly in this climate where people are getting frustrated with this issue.
1. Have you tried the beta?:
http://www.limewire.com/english/content/beta.shtml
Why not set up a new user account where the preferences are totally separate from yours at present & choose a new location for everything in this new user account.
2. Have you checked to make sure you have all the updates to your graphic hardware drivers & other hardware?