[Paul M]

.. since 'foreach' is used it processes the complete $pidlist.
if 'paulm_20050716' is found, the whole pidlist will be processed.

Yes, the whole list will be processed, but if you actually read the code, you would see that each product is checked to see if its installed, and only deleted if it exists.

.. Now .. to me trying the DELETE a not existing productid from the db might cause
some errors, -> Error Number : 2006 to be exact.

Nope, a record not existing will not cause that error.

... but then again, what do i know.