I have a Targus IR Keyboard that I got about a year ago that I use with my Tungsten E. Lately, the software seems to screw up about a week after I reinstall it. I'll type something in, and weird characters pop up, and it'll take me to different programs. I know the battery isn't dying because I haven't used it all that much. The Targus website doesn't offer much help, so I'm wondering what the problem is and if it can be fixed.