Vista - Live Messenger doesn't logon:

I have a Dell Dimension 8200 with XP SP2, with DSL connection. I have
AVG antivirus free version 7.5, Comodo firewall, Spyware Blaster and
Hive Cleanup and all work well with no conflicts and I haven't added
anything to my computer.

Previously my Live Messenger use to sign in automatically whenever I
booted up my computer with no problem. However about a month ago it
started signing in and after trying a number of times it fails every
time and requires me to click the icon which then proceeds to login
with no problem. It never did this before and I shouldn't have to
click the icon. I would appreciate it if anyone could help me correct
this.


Thanks,
Robert