Issue with GIT server

Hello,

I am facing the following issue with GIT server running on Ubuntu 8.04
using an http interface (apache2)..

When I try to push code at the GIT client end

1. git-add(s)
2. git-commit
3. sudo git push upload master

I get this error - 

error: http-push died with strange error
error: failed to push some refs to 'http://<usernaM@<server ip
address>/<git_dir>/'

Any pointers as to how to debug this further ?

Regards,
Ranjan