I am getting pixelized video in my time line that is not present in my raw clips.
The pixels sometimes disappear, sometimes they are permanent.
I have no clue where to start to fix this problem.
Anyone else experience this?

I am using FCP 6 G-5, 10.5.8
HXP-500 P2 camera
Ingest firewire from camera
using either P2 Log Pro or P2 CMS
to place and render from a Medea 5 drive SATA RAID

What are your Real Time preferences set to? Likely, that is the problem.

First, mosaic seems to be a better description.
What should my RT settings be?
they are at Unlimited, dynamic and full quality now.
How would this cause my problem?
thx

If not the RT settings as suggested, perhaps the footage is not fully rendered and showing you a lower-res preview version. Do you have a render color indicator above this footage on the timeline?

No I do not get a color line. I think it may have more to do with the Power PC 4 year old computer doing full HD work. And the boss has ok-ed a new computer.