Corrupted Font Caches in Mac OS X 10.4.x?

Both my PowerBook and PowerMac have been suffering from corrupted font caches over the last few months. Generally a few letters in Monaco start looking funny in Mail.app. Font Finagler1 fixes it each time, however it’s becoming a real annoyance.

My searches haven’t turned up any known issues – anyone know what could be causing this?

  1. I’d prefer the problem go away rather than registering, but I may register soon just because the software is saving me time right now. [back]