{solved}get some times blank page it's something to do with the images

[janis]

i'm in ubuntu right now..

some strange's things happen don't know if it's a bug or i forgot something the put in the php settings..
i install 5.3.9

but when i upload a picture i get a blank page.(not all but some, i did resize them in space and pixels but that didn't help)
if i open it in the front i get a blank page and if i click in the backend i get blank page..
when removed the picture i get the product to see..

gr

solved:  apt-get php5-gd               reboot