Sure, something is wrong, but not my code:
Mailpress, NextGen Gallery and several others can’t create tables.
WP was installed from my hosts admin-pages, that could be the reason.
I had wp 2.9 installed when I added Super Cache and it seems to work fine so far. I suggest that you remove wp super cache and then install it again.
WordPress Database Backup is a great plugin btw.
I already had
folders chmod 755
files chmod 644
…and still I get that message. So I don’t think it’s a problem, more like a glitch. Or what do you think? Did anyone get rid of the message?