NIS - Full System Scans (Idle) bogging system down?

Another question:

 

I noticed that my system was extremely slow in running up from an idle state of 2 hours.

Full System Scans have been turned off in Settings, when 2012 was installed.

 

Has anyone else experienced a sigificant slowdown when emerging from an Idle state?

Never had this issue with NIS 2011.

 

Many thanks.

 

Atomic_Blast :)