Ringtones missing after charging?

[ceredonia]

I've only had my MyTouch 3G Jack for about a week. I noticed a few nights ago that after letting it charge overnight, all my ringtones would become "UnknownRingtone" and therefore stop working, so when I get a phone call it's the standard "RIIIIING" noise. This is the 3rd or 4th day it has done this now. The issue can be fixed with a reboot, but that's annoying. Anyone else experience this or have any idea what's causing it? The ringtones are just custom ones I've made with Ringdroid. They worked fine on my previous G1, where I made them, and then transferred them to the 3G.

 

[KillaLurp]

I'd really like to know what that is cause the stock tones suck plus like you my g1 of all phones worked fine