Right, for about a week now I’ve been having an issue in OSX whereby text is rendering very badly indeed. At random, characters are missing from blocks of text, be that in Web Pages (in Safari and Firefox) in subject lines in Mail.app, on captions on the Dock. All over. If you go back and forward in the web browser the missing characters usually re-appear.

I tried clearing my Font Cache using Linotype’s Font Explorer, which hasn’t resolved the problem. The only possible issue I can think of is that at this exact moment, I do have a a lot of fonts installed on this system. 628, in fact. I’m aware this is a lot. Before I go trawling through enabling, disabling and otherwise organising my Font Library though, can anyone confirm if that sheer number is likely to be a cause of my problem? Like most things, much as it would be pedantic and nice to organise my fonts, it’ll take ages and if it’s not actually going to fix my problem I’d rather put it off.
Shared experiences much appreciated.