Problems with opening AI files

I have had difficulty opening AI files in SW. Not alwaysconsistent, but some of the issues include:
. Crashing SW (I had to reinstall SW 2009 to resolve the issue.Went back to SP 0 from SP 3.0)
. Scrambled graphics in SW after opening AI files (more so inSW2008 than 2009)
. Significant increase in number of nodes and file size
. The outline curves or shapes didn't form a closed loop and neededsignificant rework to close the loop before I could extrude theshapes
. Most of the lines were duplicated and overlapped. I had to deletethe lines individually before I could extrude the shapes.
. The curve fit has been very poor.

Note that these problems are in general and not with a particularAI file. Has anyone else seen these problems? Do you have anysolutions/suggestions? Thanks.


CSWP
SW 2009 SP 0
Dell Precision 380
Intel Pentium 4 Processor, 300 GHz
2 GB, 533 MHz, DDR2 SDRAM
nVidia Quadro FX 3450, 256 MB PCIe



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