Hello - I've been having a similar problem occurring on my
joomla hosting site as well. Installed Joomla through fantastico and it worked without problems in the beginning. Now however, i'm finding myself being thrown to the frontpage every time i try to add content.
I have two installs of Joomla from fantastico, one works a treat (the older install) while this newer (installed in March, problems began about 2 weeks ago)
is showing problems
I have also experienced a similar problem just recently on a blog i'm running (although not installed through fantastico) - are there any global changes made to timeouts or such like??
phptaxonomy.overchord.net is the affected site.