I recently migrated my hosting account to a new server to try to get a newer version of PHP & MySQL. The new server ended up being LiteSpeed instead of Apache which I had before.

Now when I try to make changes to image titles or order I get a "406 Not Acceptable" error message from LiteSpeed. However I am able to change gallery titles and attributes without problem. Before I try to migrate back to the old server, which unfortunately will have older versions of PHP & MySQL, is there anything I should do to make sure the server isn't incompatible with ZP?

Many Thanks

I am sorry, we can only test Apache based servers. If I recall correctly we had one user getting that working. I think the htaccess rules need to be adjusted.
Some quickly searched forum topics about litespeed:
http://www.zenphoto.org/support/topic.php?id=9104
http://www.zenphoto.org/support/topic.php?id=9097

If litespeed is the same as lightpd there is also this:
http://www.zenphoto.org/news/lighttpd-rewrite-rules

Update: Lighttpd is entirely different from Litespeed so that does not apply. Hopefully some of our users has any idea.

Thanks Acrylian. I contacted my host and they tried disabling the Apache mod-security rules, which seems to have worked.

So far no more problems on the gallery...