I can confirm this as well. I've got OSX 10.4.11 and Parallels Desktop for Mac 5582. Can copy, apparently, from Windows to the Parallels Tools clipboard, but when I try and do so from Mac, nothing shows up. Also would like to give a bit "amen" on the point that this is causing a major disturbance in my work Force. I'm a cross-OS copy/pasting fool. PLEASE fix this soon!