Bottom Mapping Issue with MaxSea 10.3.2

[Lobster Fisher]

Hi everyone, i was wondering if someone could help me with a maxsea issue..i have maxsea 10.3.2installed on a seperate partition on a toshiba laptop,running it with windows 7 ultimate 32bit, 4 gigs of ram, dual 6600 processors. It installed and runs fine except every once in a while, when mapping the bottom, maxsea loses the depth from my sounder momentarily, it is still receiving the sounder data but shows 0 fathoms and leaves a space on my 2d/3d.(which is no big deal,i leave my mapping on at all times while it is running, and the next time i passover that area it fills in...its just a little annoying) I tried runnng maxsea using only 1 processor but that never made a difference.Anyone have any suggestions?