Sudden Slowdown in Nod32 Scans.

Hi,

For the past few weeks I have noticed that Nod32 is taking much longer to run both the regular scheduled scan and on demand scans. Taking particular note I find the Nod is taking 00:31:02 mins to scan 121790 files where it was taking 00:15:28 mins to scan 120293 files just after I installed version 2.5. I can't think of any program I have installed which could have interfered with Nod32 and the only other change I have made recently is to install more RAM but the slowdown was in evidence prior to that.

I am not using any other applications during the scans and CPU usage is rising as high as 55% while scanning is in progress. I should also mention that I have the program settings as per Blackspear's suggestions.

Any suggestions?

Elray