Some readers trying to turn on or disable FileVault have been met with the message: A recovery key has been set by your company, school or institution.

A bug in OS X 10.7.3 exposes legacy FileVault users, but there are some workarounds to prevent this from happening.

3) Rooting around the interwebs hints - merely hints - that disabling FileVault may solve the issue. 4) Which reveals another issue - I cannot disable FV.