Duplicate key found problem

[Aditya . Sanghi]

Hi folks,

I am getting the following error/warning from the cvs server when i run an
update command.

cvs server: duplicate key found for 'y'

I had a look in the repositories CVSROOT directory and there is a val-tags file
there, with the last line being " y".
What file is this?

Thanks for your help!

aditya