Riddle me this one

[petronia]

Brand new Dell laptop on wireless home network (four other computers going through the same router experience no problems). WWW on all browsers work fine. McAfee Agent won't connect to its server, nor will the MSN or Skype downloaders/updaters. OTOH some other automatic update services work fine, such as Visio's. Windows Firewall is disabled. Connection seems to be behaving normally.

Thoughts? My guess is there's a port blocked, and nothing is listening at port 80 as far as my command line fumbling goes, but it seems weird that one would be able to browse the Internet if that were the case. o_O It's quite literally new: never had Norton or any other antivirus installed, beyond minuscule chance that it could have picked up a virus.

Comments

[sub-divided.livejournal.com]

Is it a Windows 7 computer? Does it have Microsoft Security Essentials?

[petronia.livejournal.com]

It's XP (was bought last year iirc, just not used).

[sub-divided.livejournal.com]

Sounds like the problem is on the IP-provider end.

[uminohikari.livejournal.com]

Call the support people? They're really good at solving weird internet puzzles..