Went onto ATW to do a little checking, and its a nightmare the font size must be 6 or something, i can barely read it. thought it was something to do with opera, so switched into IE and same again.
This is certainly something new to me, i've never had this problem. They need to sort it out, i don't know who's bright idea it was at ATW to do this, but if i can't read it i won't use it and thats ashame.
So for anybody from ATW, try reading the SERP page at 1600*1200 (32bit), becuase i can only just at a big inconveinece.
caine, it may sound stupid but did you check if the User-Agent of your IE and Opera installation didn't change to something fast doesn't know? no-compat.css sounds like not compatible and the only info they can get about your browser is either the User-Agent or a corrupt cookie. So if trashing the cookie doesn't change anything, i'd consult the browser header checker [searchengineworld.com] at sew.
Imagine a virus that manipulates your browser settings to use a special url as user-agent and another as referer. Advanced log spamming - if it doesn't exist allready, i suppose it will come in the future.
If you spoof your browser UA, their style sheet quirks and the small font size is one of several things that will happen. I found this out using Norton Firewall w/ browser privacy activated. They must use a script to serve alternate style sheets depending on browser type.