Hangs on sleep & does not put monitors completely to sleep.

[SpyderZ]

Mac Pro (mid 2009)
OS X 10.6.8
6 x LG Flatron L206WU Monitors (4 on DisplayLink)

Just installed the 1.7 Beta2 driver and ran into the following issues.

1) Machine will not to go sleep, it tries and hangs with the DisplayLink monitors still on, but black.

2) Attempting to put the screens to sleep, only the main graphics card monitors comply fully while the DisplayLink monitors only go blank, but are still on.

Everything was working on version 10.5 and ever since, these problems have existed. It would be nice if you could fix the sleep signal to make all of my monitors go to power saving true black(off) mode.

At least the monitors remember their proper position and alignment.