Automatic Log Off w/ Snow Leopard

[Californiaoc]

I've been using iCamsource for several months with no problems but recently upgraded my Mac software to Snow Leopard and now my system automatically logs me off after about 15 minutes if I don't stay active on my system.  I've got four Macs all running Snow Leopard and iCam 1.3.5 and only one of them has this problem.  I've checked every setting I can find and don't see a difference between the four computers. Anyone have a suggestion?

[Stefan]

System Preferences > Security > General

The "Log out after N minutes of inactivity" check box.

[Californiaoc]

Not sure how this box got checked after installing Snow Leopard or if it was totally unrelated.   Can't believe I couldn't figure this one out on my own.  Now I can sleep at night because the mystery has been solved.   Thank you for your help!