[solved] 503 Error when using Gallery (Menalto)

[super_kev]

Hi all,
My host (Eleven2) just completed the switch from Apache to Litespeed on their shared servers, and for the past few weeks I've been trying to figure out why my Gallery 3 site is not working (giving me the 503 Service Unavailable: The server is temporarily busy, try again later! error) and I just connected the dots that it must be Litespeed.

I've posted the error log that is available to me. I believe it has something to do with .htaccess file. The only thing in .htaccess file at root of server (folder up from where gallery is stored) is "Options -Indexes". I commented out the username and IPs for privacy.

2012-03-08 23:29:04.330 [INFO] [***.***.**.***:50133-0#APVH_********.com] File not found [/home/********/public_html/503.shtml]
2012-03-08 23:29:03.164 [INFO] [HTAccess] Updating configuration from [/home/********/public_html/.htaccess]

Any ideas of where I can start? Eleven2 support was great but they said it's a problem with my software, and I know Gallery 3 is not built nor tested on Litespeed servers. I have a thread on the Menalto forums but have not heard anything yet, I would like to get the site back up as Litespeed is supposed to be interchangeable with Apache.