ps2pdf and Acrobat 7 - "drawing error"

[Josef Lowder]

.
Does anyone else have a problem with "drawing error" 
messages when using Acrobat Reader 7 or with converting 
postscript files to pdf using ps2pdf ?? 

The same pdf files that can be read with 'xpdf' and 
with Acrobat Readers 5 and 6 are not as readable with 
Acrobat 7 on my Linux system.  And I am getting reports 
from others that they are having trouble reading pdf files 
I have just created using 'ps2pdf.

Adding to the mystery, some older pdf files that I have 
created using 'ps2pdf' can be read okay with Acrobat Reader 7. 
Yet, I have not made any changes to my system since I created 
those older pdf files.

How might I go about solving this riddle?