uhm ..... never had the php error here, but anyway, half of the times the forum is really slow or blocked .....
sometimes, with db error (but more in the past than now), sometimes with "service unavailable", and sometimes it just stay 2 minutes trying to load the page, then give me only a blank page, with the correct url in the url bar, but no contents, only the white page .....
this happens saltuarily, time by time (now too) ..... sometimes after a pair of refreshes, i get the page, some other times it go for hours too ...... probably server overloaded ?