FPW26 stalls on mouse clicks in Win2000/XP

[frenchpeter]

We have recently upgraded a few machines to Windows 2000 or XP. With Tamedos all of the FP DOS applications seem to run fine. The FPW26 for Windows programs also appear to run OK except for one anomoly. When one double clicks on an entry in a list box, the first such action leads to the next screen fine, more often than not. However, having returned to the list box, double clicking to select another entry seems to have no effect most of the time. Double clicking on the same entry again does not usually help. However, with the item selected, hitting the <Enter> key takes the program to the expected next screen.

I have noted what looks like a related product when working from the command box and using the File,Open dialog box. One can click on the down arrow on the scroll bar and move quite nicely down the file list until suddenly the reponse to the clicking stops. If one keeps clicking, the movement comes back and all of the frantic clicking of the button whilst the response was stalled seem to have been retained in a buffer because the list then shoots up (or down depending on your perspective!).

I have looked through many of the posts regarding 2000/XP problems and have seen many problems that we seem to have escaped but I have not spotted out particular problem. Any suggestions would be gratefully received.