Ried

Go ahead and delete the weatherbug folder. In all honesty, don't worry about unfamiliar folders. You will almost always see folders that are unfamiliar to you as so many files/folders are involved in the running of XP and any of the software you have installed. Those folders take up little room and are really of no consequence in system performance as long as they are not malware related.

For performance issues, talk to the XP forum again. What you consider slow, may not be at all..it depends on the size of your hard drive, how much memory you have, etc. You can also ask them about the error message you got earlier.