Fun Project: xTalk GUID Generator

[Mark Smith]

So I've started a UUID library, but I have a question, that is not  
entirely specific to it.

For a time-based UUID, it needs to maintain a single number in a file  
on disc. This file would be called something like  
'libuuidclocksequence'.
What I need to figure out is where such a file should be kept on the  
various OSes. For the moment, on my mac, I'm using the prefs folder,  
which is fine, but maybe there is a better choice?

Any ideas?

Best,

Mark