This issue just started happening a few days ago.
I first noticed this happening after I changed ROMs from JRummy's Kangerade to Bugless Beast v.04.
Thinking that this might be a Froyo issue, I downgraded to Bugless Beast v1.1 and the issue is still present.
I've tried two different USB cables and neither one will charge my Droid. I have the Motorola Multimedia dock and that will not charge the Droid either. When I put the Droid into the Motorola Multimedia dock, the screen will change to the dock screen as it normally does and it will notify me of a USB connection and that USB is turned on, but it will not charge the phone.
The only way to charge the phone is to use the wall charger.
Any help would be appreciated.