Admin Menu Hacked?

Hi,

using 1.5.2.1.

Today when I logged to my admin area I saw a new strange link "text_supplier" which leads to:
admin/index.php?route=catalog/supplier

and I get "You do not have permission to access this page, please refer to your system administrator."

of course I made sure that as super admin I have ALL the rights, but it simply wont do ..

I have a dedicated server and contacted the managed team, and they assured me that no malicious files have been added to the admin folder but they are checking again.

Any idea or help what this strange link is all about?

Anticipated thx

and NO i have NO installed ANY Module or Extension on my site since June 10th of 2012, and NEVER any extension that is Supplier Related.

I also did NOT touch or modify ANYTHING on my site since June 10th, thats why I was so surprised to see TODAY such a NEW link in the admin area.

Anticipated thx

check modified file timestamp ?

What file must have been changed to add links in the Main Admin Header under "Catalog" ?

Anticipated thx