After I subscribed to Spywareblaster's automatic update, Pest Patrol began to report the presence of "Advanced keylogger," evidenced by two registry entries in hkey_local_machine/software/licenses. These keys are identical to those that identify Advanced keylogger to Pest Patrol. Although Pest Patrol deleted the entries, they were re-written to the registry on each startup. Inactivating Spywareblaster's automatic update did not solve the problem, but I verified the cause by removing Spywareblaster. I then re-installed Spywareblaster and added Advanced keylogger to Pest Patrol's ignore list. This should be of interest to any user of both Spywareblaster's automatic update and Pest Patrol.