Strange permissions of files in cvs repository

[Eric Meijer]

Hello,

I have a cvs repository (version 1.12.13) on my debian linux box, since 
quite a while.  At some point, files got strange permissions.  Certain 
source files (C++ .cc and .h files) have executable bits or sticky bits 
set, while others don't:

ls -l output:
-rwxr-sr-x  1 eric eric  9208 Dec 23  2003 inputmath.cc
-rwxr-xr-x  1 eric eric   317 Feb  5  2004 readops.h
-rw-r--r--  1 eric eric  5575 Jan 27  2007 pointfunction.cc

Here the permissions of pointfunction.cc are what I would expect.  Does 
anyone have any idea how this may have happened?  Do those permissions 
mean anything to the repository?

In the repository the same files look like this:

ls -l output:
-rwxrwsr-x 1 eric src 10460 Dec 23  2003 inputmath.cc,v
-rwxrwxr-x 1 eric src   919 Feb  5  2004 readops.h,v
-r--r--r-- 1 eric src  5749 Jan 27  2007 pointfunction.cc,v

It doesn't really do any dammage, but it annoys me, and it feels like 
something is wrong with the repository.  If I reset the permissions to a 
sane value before committing, the weird permissions come back after the 
commit.  Can I just do

find . -type f -exec chmod 444 \{\} \;

on the repository and be done with it?

Kind regards,
Eric Meijer