[CentOS] thunderbird-24.2.0-2.el5 is borked

> Try to export your calendars and import them on a fresh install, see if 
> the problem persists.

 Don't think I can do that with Exchange calendars.

 Anyway, the CentOS6 version works fine, even coming from a 17.x profile, so
 there definitely is a problem with the CentOS5 version.