I recently picked up the MozillaBuild environment for Windows, based on MSYS.  Unfortunately, I find the version of CVS to have a couple bugs in it which are ruining the experience - bugs which were fixed a long time ago in CVS.  Specifically, the : pserver:username:password@domain bug (fixed in CVS version 1.11.1) and the broken pipe signal bug (fixed in CVS version 1.11.13).

http://ftp.gnu.org/non-gnu/cvs/source/stable/1.11.22/NEWS.1.11.22

MSYS is apparently providing CVS version 1.11.

Help!
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"The first step in confirming there is a bug in someone else's work is confirming there are no bugs in your own."
-- Alexander J. Vincent, June 30, 2001