Re: image galleries woes
I think I've got the same problem, also first with 1.7, now 1.8. In my case uploading relatively small image works ok, but large images (e.g. 1500x1024 jpg) result in an empty upload)image.php. The filesize is in the order of 100 - 500kB.
Using Gnome's epiphany instead of mozilla doesn't help.