Myshkino is nearly impossible to be in or around due to the zombies. They respawn almost instantly, already aggro'd on players, no matter where you are or if you have been spotted.
This has occurred every instance I have ever been in Myshkino, and they often continue spawning and chasing players until they are well outside the range of the town.
Go to Myshkino
I typically play on veteran servers mostly - this may be limited only to veteran servers, but I've not confirmed this to be true. I believe this to be spanning across all servers
Maybe - but I play on 1PP only and also 1PP/3PP servers, and I don't have a set of specific servers I play on. I go to whichever seem good at the time (ping, population), and it has happened each time I've been there.
My thoughts would be that it may be related to them being Veteran servers.
I remember when ALL zombies were doing this...that was fun.