I had an issue much like this.  It was a setting within the user's worker account.  You can confirm this by having him log into another workstation.

By generating a new worker account and point him to use it I was able to fix the issue.

I thought that was it too because I know there is some info kept in the db for each worker but it does look fine on other workstations or servers he remotes into. It only happens on his local workstation he primarily uses. Thanks though for the reply.

Thanks for the heads up.  I'm glad it wasn't anything so dramatic as what I had to do, it took awhile to get everything switch over for the person i was working on.

Thanks this is very helpful knowing that I am used to using Mozilla Firefox.but removing the add on would it cause any issues on the MS Office Application?

And If Yes would we have any solutions or remedy for it?