Well, without going into the possibility of running more than one domain per install (a very useful option), and me not knowing your precise situation, it still seems like it would be fairly simple to upgrade one domain to a recent SVN version, apply the patch to it, then copy all the files from that patched SVN (except the two config files) into the other 75 domains. Certainly doesn't seem all that dreadful to me, especially if you run on Linux. Also assuming that you don't have too many customizations, custom skins, etc. installed.
Should you decide to try this, send me a PM and I'll see if I can talk you through the patching process. Once done, there will be several additions that your customers will probably like, including the options shown in the attached screenshot.
Last edited by ABerglund; 05-21-2010 at 08:50 PM.
Arne Berglund
SysAdmin, Internet Services
Lane Education Service District
Eugene, OR, USA