MacBook Air w/ 4 External Monitors

I have a MacBook Air with 4 External Monitors:
Dell UltraSharp 30"
2 x Dell UltraSharp 20" - Rotated 90 degrees
Samsung Sync Master Commercial Display 55" Mounted on the Wall
This is the main monitor setup w/o the Samsung:
http://www.digitaltigers.com/ultraflex-powertrio30.asp
The 30" is connect to the air using a MiniDP to DP connector and the other monitors are using Sewell DisplayLink USB to DVI connectors:
http://sewelldirect.com/Sewell-Minideck-USB-to-DVI-Display-Adapter.asp
Everything seems to be working smoothly EXCEPT there are times when I bring the MacBook Air to the office and connect it and all the display settings do not seem to be saved. The arrangement and monitor rotation is not the way it was when I left.  I have even tired shutting the computer down, restarting it correcting the configuration and then saving and restarting again.  When it boots back up the rotation is correct (somtimes) but other settings such as arrangement or background may not be correct.
Any thoughts?
I love the Air and I would hate to go back to my ThinkPad but if this won't work then I will need to.

Quick update, I downloaded the mostt recent drivers for the Sewell adapter and that seemed to work.  Which is strange because I thought i had done this previously.
None the less it looks like we are good to go now.

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