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>>I have Windows 95 here. Anyway, I increased the size of this form a little bit and put combo closer to the bottom, so now it shows always on top.
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>Are you running your application maximized? If you are not, and if the Windows Task Bar is set to always on top, it will cover the bottom of the window. If your application is maximized, the task bar should not cover it.

Thanks, it explains this problem. I will set my form to be maximized.