>Thanks, Nancy. I tried to put set step on just before release oProgBar

Okay. And what was the result? After the release was the variable still in your locals window? If so, then I expect the form has an outstanding object reference, right? That's common enough problem here that I'm sure you're familiar with it. Check the calling form that any runtime created object properties are set to .NULL.

> and I experiement with thisform.lockscreen.

No experimentation needed, Nadya. Whilst debugging, set it .F.

>I found, that grid.MyForeColor fires lots of times, then release of progress bar was executing properly, however, this ghost was still there.

Ghost? Ghost or object? Could you move it? Then the object wasn't released. If a ghost, then LOCKSCREEN is probably the problem.

> So, I was keep trying, until the last piece of code, which seemed to solve this annoying problem.

Which last piece of code? Do you mean the whole block you pasted? That had a lot of code in it. What in particular solved the problem? BTW, why do you do the .paint? Just curious.