I've been getting all kinds of errors in Google's Chrome browser (v 21.0.1180.83 m) recently, and I can't figure out if it's Chrome's issue or my Internet connection, although I'm leaning towards the former since I'm not having the same problem in Firefox.
Here's the error I get, when for example, I try and make a Paypal transaction:
Bad Request: Your browser sent a request that this server could not understand. Size of a request header field exceeds server limit.
Rather cryptic. You think now that we're in the 2nd decade following Y2K some of these error messages would be more user-friendly, or at least provide some suggestions as to what to do!