Are you meaning when you try to star a contact as a favorite for the pull down favorite contacts widget?
Yours is adding people other than the contact you tried to add?
Another situation I've had is where you add a contact, and it actually removes another contact, while never adding the contact you tried to add.
Back up all of your data first.....then...
Before proceeding, you may want to go into settings, storage, unmount SD card. And remove your SD, just to be safe.
For both of these situations, I've had to do a factory reset, go into: settings, privacy, factory data reset. Erase all.
This is the only thing I've personally found that will fix this issue. Happened to my newest maxx(I own 2) right out of the box..
Hope this helps??
DROID RAZR MAXXIMIZED!!!! XPARENT BLUE!!!