One of the reasons DTC may have put a hold on the stock,
other than the possible discovery of unregistered shares, etc.
may be due to evidence of a "trading irregularity". This would
make sense because of the volume spike starting around
March 7.
The settlement of the SEC vs. MWIS on
Feb 1,2011 included an injunction issued to the company "permanently restraining and enjoining defendant MWIS from violations..." of a shitload of sections, one of which probably has to do with never again to engage in "pump and dump" schemes.
Don't know the mechanics of the system but its possible
that DTC gets a list from the SEC requiring them to
monitor certain stocks for unusual activity.
Don't put it past the scumbuckets who ran this company
to try to pull off one last scam with the VRGO "merger".
Just a guess...GLTU