Also today around 4pm, when wikipedias got switched to 1.23wmf1, the mobile site experienced the classic debug=true issue - a JavaScript exception was being thrown due to what I think was some old code being loaded (when debug=true was appended this error didn't occur so I suspect some caching issues). Reedy seems to have fixed it with lots of file touching (thanks Reedy)! Greg, what can we do to avoid this happening again?