Facebook Mobile images too small
 

A few weeks back I could go on the facebook mobile site and click full image on a picture and look at a reasonably good quality blownup version,
Anyway, now all images are small and when I click on full image its still really small...
I have the Curve 3G 9300 on the UK network carrier '3', I have reinstalled the fb app again and again but this has made no difference,

can anyone help??