O&O defrag version 12.5 build 351

Hello,
I recently installed this trial (I realize it's up to 14.x now,
but I wanted a product for Windows 2000 and this is the last that worked)

I have 3 partitions on my first HDD, A,B & C.
Auto monitoring is only active for partition B. I commenced to move some
files from partition A to C, estimate from Windows about 8 minutes.
Just after this started, it seemed that auto defrag kicked in for
partiton B. This was a disaster. System was unresponsive for about
5 minutes. I was finally able to get Task Manger open and confirm the
high cpu usage in OODAG.EXE. This, as well as the HDD head contention
contributed to the problem.

This makes the "auto" mode unusable, if it's not aware of activity on
other partitions on the same drive. I have contacted O&O for their
comments.