I've just noticed that half a dozen or so posts have disappeared from the following thread in the PHP forum (a thread that I had contributed to):
base64 encode / decode [webmasterworld.com]
Plus a new thread that I started a day or two ago has vanished?!
As it happens this also coincides with me seeing a new site design! Is this just coincidence?
(It looks like someone has recovered from an "old" backup?!)