I am getting strange problems trying to use Draftsight V1 R2.1 on Linux Ubuntu 12.02.  

Draftsight has been working well on older versions.  I was forced to upgrade today ("Expired license something").  Much difficulty installing on a 64 bit machine, but finally got something working using --force-architecture,depends  options.  Crazy looking screen - my drawings had no objects, could not load the modelspace tab, crazy shapes on the screen as if the video hasn't loaded.  Gave up on 64 bit and went to an old 32 bit machine, where Draftsight has also been happily working for a number of years.  I hate it that Dassalt insists that you upgrade a perfectly good working copy of Draftsight, whether you want to or not.  The new version is unusable. 

Installed Draftsight using Gdebi on 32bit machine.  All model space objects are invisible.  All layers are thawed and visible, but just for fun, I froze and thawed, turned off and turned on all layers.  Sufddenly model space objects are visible.   Clicking on the Model tab leaves the screen still displaying paperspace, until all layers are frozen and re-thawed.  

Same thing happens when going to a paper space tab, with the same solution - previously thawed layers are now visible if frozen and re-thawed.  Saving, closing and re-loading a drawing results in the same issue.  

Occasionally the same crazy shapes are visible on the screen - Panning will produce ghost images of the edges of paperspace arrayed across the drawing, although the drawing with print and print preview correctly.  Draftsight is essentially unusable with this wierd  problem, if that is what it is.  (Video?) 

Anyone have a clue as to what is going on?  If this can't be fixed, Draftsight goes in the dump, it isn't usable in the current Linux configuration.