Help What is causing my sd card to automatically dismount?

[A.Nonymous]

Something is causing my memory card to dismount every time I plug my phone into a USB cable. I plug in, it shows as charge only, but the SD card dismounts and mounts in my computer. I can change it to "disk drive" and then change it back to "charge only" and it fixes the problem. I can't figure out what's mounting my drive automatically.

These are the apps I've installed recently:

TuneSync
Chess for Android
ElectionCaster
ROM Manager
Car Locator update
CallTrack
PinBall

Any idea which of these apps may be causing this behavior?