Review for LDAP Swapping by David Rees
Rated 5 out of 5 stars
Very handy for working around the Thunderbird LDAP timeout issue https://bugzilla.mozilla.org/show_bug.cgi?id=79509.
Note it only works on the Global LDAP as set in Preferences > Addressing > Directory Server. And for your account's Composition and Addressing settings you need to have it set to "Use my Global LDAP server preferences".
To create your own collections, you must have a Mozilla Add-ons account.