I've been getting "server too busy," random 404 errors and time out/server taking too long to respond type of errors pretty frequently this week. It started happening somewhat late last year, but it's happening about every other visit now (and I come here daily just about).
Thinking it may be the increased popularity of the site, and wasn't sure there was something anyone can do (other than get larger/faster servers).
Just hate the idea that new readers might get turned off by the errors and leave.
:(