Media outlets are reporting Manufacturing Problems with the Viewsonic G Android Tablet.
Some blame it on the nVidia video card chipset.
As one familiar with the device I can say pretty solidly there's nothing wrong with the hardware. It's the darn custom overlay that Viewsonic added to the tablet that seriously hampers the device.
Simply installing a different software pack that removes their home screen replacement results in a very speedy device.
In fact, scanning the developer forums for the real geeks who would know, there's been no actual hardware problems to speak of.
If only they had left the stock Android interface on it, they wouldn't be having these problems.
UPDATE: Post from the Viewsonic VP of Marketing on a forum I frequent:
http://forum.xda-developers.com/showthread.php?p=9960227#post9960227
We will get s/w update out ASAP. We're also releasing the kernel this week.
The gTablet should NEVER have been pulled.
Are working with Staples to address this.