I have a DSC-HX9V which I am very pleased with apart from the occasional overly noise reduced jpegs... (This really needs a firmware upgrade to fix it, please Mr Sony).
When I connect to my PC (Windows 7 Ultimate 32 bit) I allow Sony PMB software to download new images. But even though I have ticked the "Import only media files that have not been imported" tick box, there are certain images which get imported EVERY time. And there are LOADS of images it wants to import... This is clogging up my hard drive and is very inefficent, and much slower to download.
Sony even have an FAQ to answer the question "Videos and photos that have already been imported to the computer are imported again and again." But their answer is to tick the "Import only media files that have not been imported" box...
http://guide.d-imaging.sony.co.jp/pmb/5500/us/t1140_faq.htm
This surely can't just be affecting me???