Hi,
what version do you use? I guess current release?
I just forgot, but had a fresh installation of 7.1 sp2 mp1 two weeks ago and had the same issue. I don't really often capture images but was exact the same problem. I didn't give a thing on this, because only one image was needed (hw-independent) and was in hurry.
So far, I can confirm this "bug", but have no other solution as you already mentioned. Next step would be a support request.
Maybe I find some time to have a look in the ghost-process.
Regards