I changed my desktop picture several months ago in my Windows 7 VM... I noticed a while back that if I let my Mac set long enough (with the VM open) when I wake it up, the old desktop picture returned. I changed my desktop picture back, then proceeded to delete EVERY copy of my previous desktop I could find... Today I left my VM open on my Mac, woke it up and sure enough my old desktop picture is BACK! I've verified that I CANNOT find ANY copies of this desktop anywhere on my system... Anybody know how this desktop image comes back???
I found the issue was due to something I had done, all be it in an attempt to fix another problem... When in coherence mode Parallels removes the desktop picture and replaces it with a blank screen. Most likely to speed things up, but it's completely impossible to prevent. I would prefer the ability to disable this, as I found if I set the desktop picture to the same as my Mac Desktop (all be it with some pixels removed from the top to accommodate the menu bar), I can use Aero and it makes it appear as though the mac desktop is showing though... Though because Parallels takes the liberty to replace any desktop image with a blank picture, one has to MANUALLY reset the desktop picture EVERY SINGLE TIME coherence is activated... At some point in time in the past I setup a script which would automatically change back my desktop every once in a while so I wouldn't need to constantly go in and change the desktop picture BACK to what I had originally set it to... Upon disabling this script the desktop resetting issue disappeared (but of corse the blanking out of the desktop image when entering coherence still occurs)...