Kiyo, you were correct to report the restart issue. I just wanted to make sure that neither you nor any other reader thought that PVer in itself was necessarily a problem with your results. Your English is very good

Hi Petude,

Go toDevice Manager and select the profile (Default, Home, Work or School) that is correspondent to the computer where you are having this issue. Then select "Custom Profile" and scroll down the page till you find a setting called Suspend work if CPU usage is above % of cpu. Set it to 0 (no restriction) or a higher number that you'd like. Save the profile and go to your BOINC manager and update the WCG project.

That message shouldn't appear anymore if you set it to 0% or it will only appear if Non-BOINC CPU usage exceeds the number you entered.

Also, if I were you, I would disable the screensaver in order to save CPU processing power. Also, turn-off the screen instead to save electric power.

A checkpoint is where a task resumes from if for a number of reasons you need to restart task for example if you turn your computer off, when your computer restarts it will start the task from the latest checkpoint usually about every 10 minutes checkpoint is made

That is what happens when the two wingmen have widely varying machines. I seem to remember that somewhere on the wish list is a proposal to better pair machines so these big disparities don't happen. However, don't hold your breath.
Cheers

filchef, There is nothing you can do. You must wait until your wingman finishes with the workunits before they can be validated. This can often take a week or more. I have workunits pending from 2/7/2014. It all works out in the end.