If you use pMachine version 2.2 or 2.2.1 (Free or Pro), then you need to download a security patch Rick released today. Someone alerted him to a security hole, and he quickly fixed it. Another reason I love pMachine so much.
pMachine Free users, download this file:
http://www.pmachine.com/misc/pM_Free_patch.zip
pMachine Pro users, download this file:
http://www.pmachine.com/misc/pM_Pro_patch.zip