Hi. Today I purchased my new spéakers, are a X-530 model from Logitech, need to say It's my first 5.1ch setup. The problem is I'm using Vista and the speakers doesn't work properly, when trying to play a music file it only sounds on STEREO (subwoofer+2 speakers), but setting the setup to 5.1ch using control panel ALL the speakers sounds fine, VERY ODD. I readed various post about this issue, and they say that Vista SUCKS rendering 5.1/7.1ch, but the posts was kinda outdated (more than a year ago). Is it possible that I'm doing something wrong????, I NEED TO CONFIRM that the speakers works fine, It had 1 month of warranty and I'll return to my home tomorrow and I'll not be able to go back here after 4-5 weeks.