Unexpected CPU-Usage after closing Application (in IDE)

Hy I'm observing an unexpected CPU usage of my application. It occurs when I start it from within the IDE and then close it. The task-manager then shows a CPU usage of 10-15% (on a 8 CPU system) of the still running IDE process, that wouldn't be the real problem. If I want to restart the application from within the IDE it doesn't start.
This last for about a minute, the n the CPU usage for that process goes down to zero and I can restart the application.

Since I only start and then stop the application only the Form is started, no objects are created etc.

Is there anyplace where I could look what is happening with the system?

Do you see the same behaviour with other projects or is it just one?

God point, I checked with another application. It's showing the same, a relation with the a lost feature in the debugger, which couldn't be restored by a new installation of IDE I'm considering to do a complete new installation of the computer.
Thanks for this hint.

Quote:

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Originally Posted by opus

God point,...

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John's true identity exposed.