I tried Hi-Launcher alt-tab functionality on HTC Touch2, assigned trigger to HW "back" button and I found problem with volume buttons function. Normally volume buttons after the first press open volume adjustment screen and the second push adjust volume up or down. However with Hi-Launcher activated the second push of volume button closes the volume adjustment screen instead adjusting volume. After deactivating Hi-Launcher the volume button function works well again. I also tried to put HTCSoundSettings.exe to "Disable" exceptions but it did not help. Any idea how to avoid this problem?