A month ago PayPal took my account hostage because they fantasised to have reason to believe a third person had access to it.
Paypal has a long history of being a pain in the tush about this: http://www.google.com/search?sourceid=navclient-ff&ie=UTF-8&rls=DVFC,DVFC:1970--2,DVFC:en&q=paypal+freeze+account
Thanks!