LG is pushing an update today for the Marquee, this may or may not be part of your problem. (see below) BTW, I'm getting ready to send my wife's Marquee back as it's 10 days old and full of issues.
LG Marquee Software Update - LS855ZVC
Enhancements/Fixes
- Device may lockup while on call
- Security update
Important Notes:
- Updates are released in stages; if you do not see the update on your phone immediately, please be patient
- Refer to the LG Marquee Software Updates blog for install instructions