Nope not the problem at all. This laptop will run faily new games (badly but it does) and not give this sort of trouble. Not to mention that it used to run messenger fine. Unfortunatly MSN was removed from the laptop for a long time and I have no idea what has been added since, that could cause the problem.
Besides all that we're talking XP here not Vista. If I wanted an OS that ate resorces, was unstable and cost $386 then I would probably check myself into a mental institution.
(Sorry about the last bit but Vista sucks! DOWN WITH VISTA!)
[Edit]
RAM is 512Mb