50%+ CPU usage for AvastSvc.exe when hovering over files in Windows Explorer

[cashonly]

I'm on Avast 5.0.507 running Windows XP SP3

When I hover over files in Windows Explorer, Task Manager shows 50%+ CPU usage for AvastSvc.exe

If I leave my mouse there, it goes back down to zero.  If I move it to hover over another file, it spikes back up for a few seconds, then goes back down to zero.

It also happens when I select a file.

Now, if I select say 20 files, and right click, then I might as well go get a cup of coffee before I get a rt-clk pop-up menu and AvastSvc.exe is cranking away at 60-80% CPU.

What can I do to fix this???

[CraigB]

Hi cashonly, you need to update to the latest 5.0.677 first as your on a fairly old version and see if this fixes your problem.

[Hermite15]

it might not be just a matter of version but also a matter of what settings the OP's got for the file system shield

[cashonly]

OK,

I upgraded to 5.0.677 and am still having a problem.

This is what I do...
I reboot my PC and open task manager... everything is fine
I open Windows Explorer... everything is fine
I click on the '+' for My Computer... everything is fine
I click on the '+' for C Drive... everything is fine
I click on a folder in the C Drive... The AvastSvc process is bouncing around between 30-50% and pretty much stays there.
I select about 20 files and right click... The AvastSvc process is bouncing around between 65-85% and it's taking 20-40 seconds showing the hourglass before rt-click menu to pops up.

What can I do to fix this?
I have all real-time shields enabled.

Thx,

Cash

[cashonly]

OK,

Just turned off all shields and that stopped it, now need to figure out which shields cause probs

[cashonly]

OK,  It looks like it was the "Scan Documents when opening" setting that was the problem.
I unchecked it and things work fine.

So, the question is how do I get that feature to work without grinding my system to a halt?

And why does it do it when I just click on the directory or a file or group of files without even opening them?

[YoKenny]

How much RAM does the system have

[cashonly]

I have 4GB of RAM on a Quad-Core Intel machine