Yes this weekend was pretty bad for me, mostly in the evenings.

I had one episode where I got called away boxing in SFK , so eventually got disconnected, logged back in and couldn't get back in game, got the"unable to find instance server" or some such.

Kept trying and eventually got my team back in though some ended up finally logging in Westfall of all places.

Later that night I had latency over 4 secs on some chars, (not others).

Last night I had issue zoning out of a dungeon after clearing it, eventually got my team back to stormwind, (took 15mins), then queued for VP and while I could see all my chars at zone in, only one char made it past the load screen.

killed everything, tried again, and got 4 out of 5 in and kept trying with the 5th and eventually got him in as well.

(through all this rebooted router and machine just incase).

Another friend of mine was having the same issue single boxing.

We both were on Anvilmar and use Frontier FIOS. He tried playing on another server and had no issues. Not sure what is going on.