negative icefraction

[you@geosci_usyd_edu_au]

CAM3/CLM3/SOM users:

I run CAM3/CLM3 coupled with a slab ocean. Due to negative icefraction, CAM3 stopped. Here is the error message:

SOMINI: Read som data for date (yyyymmdd) 1216 sec 43200
SOMINI: Read som data for date (yyyymmdd) 116 sec 43200
INITEXT: ocnfrac= 0.000000000000000E+000
INITEXT: ocnfrac= 1.00000000000000
INITEXT: ocnfrac= 0.000000000000000E+000
INITEXT: ocnfrac= 1.21099589765072
INITEXT: ocnfrac= 1.00000000000000
INITEXT: ocnfrac= 1.00000000000000
INITEXT: ocnfrac= 0.000000000000000E+000
INITEXT: ocnfrac= 1.00000000000000
BOUNDING: bad frac= -2.354411967098713E-002 at i,c= 2 85
ICE
ENDRUN: called without a message string

How should I cope with the negative icefraction to let CAM3 run.
Thanks.