I noticed this too.

It always happens to me in sas fetching online propfile them it says some thing with erroe code 3452

Last night/Early morning  I had 2 messages that came up new for the first time for me.

'Connection with the Activision Servers has been disrupted.'   Perfect connection, nothing wrong.   I've also had times were I log on and none of my friends, recent players, clan memers list were completely empty.  I could still play but couldn't join anyone with my friendlist/clanlist.

Could rage so badly right now...I'm really over all of this crap. Between the new patch messing up connections and the fact I pay good money for a sweet connection and I can't even connect when my mates with dodo net can and they don't even pay for there net...omg frustrates the **** of me! FIX your **** mw3 or this disk is getting snapped!! Starting to think that's all it deserves!

Whoever said that it is not the fault of PSN should be slapped. I have this game on PS3 and Xbox 360 and have never had this, or any other, connection problem on Xbox Live. Happens all the time on PSN though. To test it, I did all the usual restart the console, restart modem, connection tests etc and still can't get on. I boot the same game up on Xbox and it works right away, just as it should.

If my internet connection is working properly then that is not the problem. And if I can fetch my online profile from the call of duty servers without a problem on the Xbox, then the servers are not the problem. That really only leaves PSN as a potential cause.

Maybe it's a sign that I should go play Borderlands 2 or something. At least it will work.