i am on windows xp and i cant get on msn messenger?

i cant seen to get on msn messenger as it says my firewall might be blockin it but even if i take it off completely or add it on the list to allow access it still wont? please help.
Dawn, December 2005


done
Try changing your MTU to 1400 using DrTCP.
I have already answered this question on here today so wont go into further detail.

Gary, December 2005