If you have this hardware and are experiencing com drops this solution should help:

http://www.galilmc.com/forums/ubbthreads.php?ubb=showflat&Number=13053#Post13053

Love that Galil Plugin!
Darek

I have seen a fair amount of computers come with these RealTek Ethernet controllers on-board.  And another issue with them is that the transmit buffers are woefully inadequate for streaming data TO something.  They work fine when the PC is streaming data FROM something, like a video from the web, etc...  But streaming data to the Galil was problematic.  So you have to go fiddling with the Ethernet card driver settings.  Find the transmit buffers and max them out.  Then it seems to work fine.

Steve