It was an issue before SR1 as well. Whenever I've got Poser Pro and P8 open (with or without SR1) it does this render cache distortion. I'm using WindowsXP.

I must admit that I didn't report it though, since I haven't used Poser Pro that much, only for some testing lately.

Artwork and 3DToons items, create the perfect place for you toon and other figures!

http://www.renderosity.com/mod/bcs/index.php?vendor=23722

Due to the childish TOS changes, I'm not allowed to link to my other products outside of Rendo anymore :(

Food for thought.....
https://www.youtube.com/watch?v=pYZw0dfLmLk