I have tried changing permissions for about eveything in my wordpress folders, but I still can't edit theme or plugins. Also codeforged's Headline Images plugin does not work. The plugin gives the error:
FATAL: The directory you specified to cache the image files is not writeable from the Apache task. Either select a different directory or make the directory you specified writable by the Apache task (chmod 755 the directory).
I am thinking it has something to do with apache ... ? or some weird permissions thing. I've tried searching, and I've found nothing.