In don't know if anyone's aware, but PHP5 seems to break the png aspect of IH2.

I got an error with png images, and found this thread: which appears to be the fix, but I can't find the right code in IH2.

Perhaps someone else with da skillz might take a look!

I got round it by switching back to php4 in .htaccess, but I'd rather run 5 as it seems quicker.