Vista - Processes 8% CPU 100% why

In Task Manager in the CPU column, processes
total around 8-9%.

Yet in Performance tab CPU useage shows 100%,
and the HD light is almostly stadily on,when I am
doing nothing.

Why so much cpu useage?
And why isn't the cause shown in Processes
in the CPU column?
There seems to be no associated network activity,
I might assume it's something to do with indexing,
it's not malware scanning, as I've turned these off.
I'd like to know what's going on.

ato_zee@xxxxxx wrote:
Right click on any disk drive icons to get properties and uncheck "Index
this drive" - see if that stops the light.

Seems some machines are bad, some are not, no idea why.

If you find this slows searching then adjust the parameters in search
but I don't use search much so the time is simply wasted.