Used Ram grow after Quickscan with Archiv

Hi together,

 

i scant my User Account from iMac Lion 1074 with archiv files.

the scan is very fast, but after them the Ram grow from 1,74

to 3,99 GB, it wil not less after closing the scan.

 

Only an restart helps, than its by 1,70 GB RAM.

Is that normal Working and could not lesser RAM,

and its better to make an restart after maked Fullscan

with Archiv. 

 

thx

 

stuby