aha !!
that old ?>[line feed] problem !!! ;-)
kewl thx...
and so now we know the full story after all that chasing the wind ;-P

I'm experienceing a similar problem,

I copied my elgg installation from my old 1 and 1 shared hosting to a cloud server.

followed instructions here 

http://docs.elgg.org/wiki/Duplicate_Installation

and here

http://community.elgg.org/pg/pages/view/50191/

The old pictures, files, profile photos and videos are showing from before the move, it acts like its uploading, and says photos been uploaded, but when i add new files, photos and profile pictures they dont show, and ive just checked the data folder and theyre not there

When i add i zap videos the page goes white

I added some events to calender yesterday and they were ok for a few hours then something happened and now they show as jan 1st 1970

Can anyone give me any suggestions please.?

I just realised, i think the event calender things were ok until after i tried uploading a profile picture. and i beleive its after that it knocked the date out on them.  (but can't say 100%)