I'm using the latest version of WPP: 28.9.2013.1:28.9.2013.1 on XP/sp3, and have configured it to load at startup. On a few occasions recently have noticed system slowdowns. On opening Task Manager I see that WinPatrol.exe is using about 50% CPU. When I right-click on Scotty in the tray, I get no menu, so I have to kill WPP via the Task Manager, which solves the problem. The system otherwise works well.
I have taken WPP out of my startup, and will see if this behaviour returns when I manually start it.
I report this odd behaviour FYI only, as it is recent and has not occured before in my many years using WP. It might well be related to this old XP system, since I haven't seen it on my Win 7 PCs.
Please keep us updated, Joe, as I'm sure BillP will want to know if it continues.
In the past, I've also noticed --- on occasion --- that WP would use "excessive" CPU... both on my XP system as well as my Win7. Since I usually keep an older version around "just in case", I would revert back... e.g. to 9.2013.0... provided that one functioned better.
For what it's worth, I'm still using that version... hadn't "bothered" to download/install the latest.