Watch a normal BA replay today and it desynced as well. Tried some more, turns out, every replay I now watch desyncs about 2-3 minutes in

There is no actual desyncing message in the console, but it's obvious to tell it's synced properly and then desyncs after a few minutes.
Maybe it's a problem with the replays? Could test this for me: http://replays.adune.nl/?2673 , say whether it desyncs for you or not.
I can't thing what could have triggered it cause I haven't changed Spring version in a long time, or any other important Spring settings or thingys...
Here's an infolog of a replay that desynced whilst I was watching it back: http://pastebin.ca/1913160 Whether it's of any use to you I don't know.
Also, I dunno if it's of any consolation, but I get spammed with "Network Error" as soon as the game ends.