#1 - Oct. 23, 2012, 1:55 p.m.
It happens once per 10-20 minutes and it happens to all my guildies. It is a bug. Please do not wait for 100000000 complains in order for you to realize it (its not your first time).
Random Crashes after Halloween Update
#16 - Oct. 23, 2012, 5:36 p.m.
While a screenshot is normally helpful in tracking down an issue, crashes are different: we need the information from the “Show Details” section of the crash report to determine what caused the issue.
The best way to report a crash is to fill out the text portion of the crash report with information on what you were doing when you crashed and any steps (if applicable) that you can take to reproduce the issue. Send it in to us by hitting the “Send Report to ArenaNet” button; those reports go straight to the programmers, with details they need to investigate the issue.
Submitting that report goes a long way towards helping us fix the problem, so keep sending them in!
#19 - Oct. 23, 2012, 6:13 p.m.
If you’re getting disconnected, that’s a separate issue we’re tracking in the Tech Support forum, so please post there with your full error code. 
Thanks!