Version:           unspecified (using KDE 4.5.1) 
OS:                Linux

any higher number of modified images (20 in my case for 2GB ram) causes gwenview to claim a lot of memory (over 1gb). the problems are visible at about 15+ images and when i reach cca 20, i get some warning in the program, a red text in border appears on top saying something about too much images modified and that i'd rather save them. 

Reproducible: Always

Steps to Reproduce:
open a photoalbum (any collection of photos) and rotate a bunch of them. 
in my case, 2gb ram, cca 20 rotated images (3.4MB each) will cause gwenview to take over 1.5GB RAM and render system very slow(swap, apparently)

Actual Results:  
the program consumes huge amount of memory (ove 1gb for 20 modified 3.4mb pics). 
Even if it store all the modifications in ram, it should take 20x3.4mb, shouldn't it? 

Expected Results:  
reasonable mem consumption.

it's jpeg imgs, but i don't thing it's relevant.