Hi, I am a buying user of Paralells and I just upgraded to the latest build. Now I cannot use my Lexmark 510 printer anymore. I always get an error saying "USB device you are truing to connect is being used by another process". It is NOT being used by another process at all. I tried to reboot Paralells and my Mac Book Pro but It does not work. 1. What can I do? 2. Can I see what process is using my printer? 3. Do I have to step back to the last build? Please help me out. I am using Paralells to run my accounts and bookings and I am due to retunr it to the local IRS tomorrow. Thanx in advance.