Before the latest firmware update you could mute the ringer on the Treo by pressing the side button or volume up or down. For some reason, with the latest firmware this no longer works. This is quite annoying because I carry my treo in a belt holster and only have access to the side buttons when it's in the holster. Can anyone out there write a simple little app that can re-enable this feature. All I want is to have the ringer immediately muted when I tap one of the side buttons. I don't want to make the call go away like pressing the ignore button on the screen... just mute the ringer. Is anyone able to write such an app?

Thanks much,
Brett