Session.name

When hosting multiple 1.5 installations on the same domain name, there are issues with cookies. The solution is simple.

Below this line:

$wgSitename        = "Your Wiki Name";

add the line:

ini_set("session.name", "{$wgSitename}Session");

So that it looks like:

$wgSitename        = "Your Wiki Name"; ini_set("session.name", "{$wgSitename}Session");

$wgCookiePath provides an alternate solution.

This workaround is not necessary for version 1.6 and greater.