Faterson:
Of course I am (and do you really think that that would affect just multiplayer games?). I've also heard (well, read) playing partners referring to the same problem
I realised that I hadn't cleared my caches after the last update so I tried that, and it seemed to help, but now when I tried the problem reappeared, if not as bad as yesterday. I'm beginning to suspect that it has to do with the server load, so until I get some indication that it may have improved I'll be playing my multiplayer games primarily when the Americans are sleeping or working.