The CS that manages the Install/Upgrade forum is sending out emails with invalid subjects ("untitled") and bogus urls. Here's the email I got for this post:
Subject: untitleddrakonchik has posted to one of your subscriptionshttp://www.plainblack.com/8gQpF8TeByHIXOtifA1e2QI've just installed v.7.2.3 (stable) under Fedora Core 5. After noticing.....
I believe this is a repeat of a prior bug that has been fixed (The CS sending bogus e-mails bug, fixed in 7.3.6).
Closing this as a duplicate.