try to rename .htaccess to .htaccess_bak and check the test.php again. Maybe the .htaccess is not neccessary or includes code that is responsible for your error messages.
I renamed the htaccess file and now test and sessiontest work however when I go to login.php
I receive this error
Parse error: parse error, expecting `'('' in /hsphere/local/home/ssmith/s2studio.org/include/inc_conf/conf.inc.php on line 51
Warning: mysql_connect(): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) in /hsphere/local/home/ssmith/s2studio.org/include/inc_lib/default.inc.php on line 27
Error while trying to connect
i havebeen happy with http://www.sp34.com a uk based host with a us community. BUT I am still trying to clear up a thumbnail issue, this may not be thier issue though
they are cheap the prices/pipe options are very clean and simple. thier live irc help/chat room has a really good service and they even has a us guy in the room for people on your time
Try to remove all comments form your conf.inc.php - the part of a line behind ; starting with // (have never seen such error). The config cou have posted seems to be OK.
You can also try to disable line 51 and check what happens then.
They are very easy to work with and they are flexible with bandwidth and storage. If you wanted something more "managed" (as in you don't want to mess with it) you can also host with my company. But if you want a host catered to developers then phpwebhosting.com is really good.