If I try going to http://discuss.area51.stackexchange.com/questions/ask ("ask question"), I get "Oops! Something Bad Happened!".
We experienced a brief outage on a machine responsible for syncing parent/child accounts (in this case, area51 to discuss); if you got unlucky and needed an account sync during this period viewing a page on any meta (including discuss) was likely to error on you.
This appears to have been fixed, but we're keeping a close eye on it just in case.