are you sure you're not viewing a cached version?
Hm, cache cleanup really helped. Maybe it will be good for images to send headers that will override cache?
what is the URL to the image you're looking at?
http://stable.ts.wikimedia.org/editcount/graph/month?projectname=ruwiki&...
I see 42px tall bars. Better than 100, but still too high. Width is okay now (after the cache clenup).
— Kalan