WLM 2009 Not responding & extreme cpu uses

Hi all, I'm having problems using WLM 2009, I signs in and logs straight
out, then when i open WLM 2009 the wait cursor show's up for ages then
nothing happens, I try to minimize the program to taskbar & nothing, it just
comes up with not responding at the end of the title, I've even tried to
shut it down using task manager but i get a box saying windows live
messenger 2009 is not responding, then loads of end program boxes in the
task bar, I've taken a look at the cpu uses and the cpu is running @ 100%
when WLM 2009 freezes. my system is a MSI wind netbook I've done a AV scan
using avast & that comes up with nothing, Windows Live Defender is installed
& running & that comes up with nothing. thx

Got the problem sorted now, It seems to have stopped on it's own