I've tried installing 2.9.2 three times now. When I type in mydomain.com/wp-admin/install.php I get function errors. I have installed over 14 blogs before version 2.9.2, but am never able to get this version to install.
I end up installing an old version - which does not produce errors - then use the automatic upgrade to the new version.
PS: I had to resort to using the fantastico install this time, just to get something up there.