Full Release Notes for GHC 6.4.1?

[Rich Fought]

Hello,

I'm wondering if there exists a full description of bug fixes between 
GHC 6.4 and 6.4.1.
The short one on the GHC web site only details new features.

Specifically, I'm interested to know if there were any changes to the 
concurrency/threading
portion of GHC?  I'm encountering some nasty FFI/threading issues that 
are causing GHC
6.4 to crash.

Thanks,
Rich