I *think* I'm using 3.0.2. (I know I'm using 3-point-something and it's not the very newest one.) However, the nature of my problem is keeping me from verifying exactly.
I have been unable, the last several times, to upgrade automatically, because I get a "fatal error: out of memory" error. Although a nuisance, this is ultimately not a big deal; I just update manually. None of the fixes suggested here have worked. And I have other WordPress installations on the same host account which work fine, so it's not a server issue.
But today, I can't log onto anything admin! Whether I attempt to go to the wp-admin/ directory, type my way directly into my list of posts, or click through the "edit" link on a previously-posted article, I keep getting an error like this: Fatal error: Out of memory (allocated 23068672) (tried to allocate 19456 bytes) in /home/homework/public_html/wp-admin/includes/theme.php on line 83
This is a REALLY big problem, because I literally cannot do ANYTHING with my blog (except view it, as a reader would). What the heck is going on?