I am experiencing some problems with Logitech MouseWare since version 9.00 on all Windows systems. I am currently using the newest version which is 9.76. The problem is that the "Close Application" function bound to (for example) the wheel-button does not work correctly. If I click the wheel-button on a window or application, it will not always close this window / application, even if the mouse cursor is directly over it and the window is focused. In about 50% of all cases some other program / window will close instead, often even programs such as ICQ which normally just reside in the tray bar. In addition to that, the "Close Application" function in the latest MouseWare 9.76 doesn't want to close windows like Windows Explorer, My Computer, Control Panel, and similar. I have written to Logitech many times and they either said that they were going to forward this bug report to the appropriate department; that they never heard for such a bug (not true, I wrote to them about it 9 times before); or they just said they can't reproduce this bug and therefore it does not exist. Since the problem is apparent "only" in about 50% of all cases you can't notice it immediately, but you surely can notice it within 10 minutes. It seems that Logitech does not want to be bothered with this (or perhaps any) user bug report as they obviously never really tried that on their systems. The bug is present on all MouseWare versions since 9.00 for all Windows OSes. I myself use WinXP Pro but I have tried it also on Win98/ME/2000. If anyone noticed the same problem or knows how to fix it, please reply. Thank you.