Lately, I've been running TightVNC viewer on Windows for most of the day, with the server running on Linux. The only major problem I have is cut-and-paste between a local Windows window (say, a Netscape mail message) and into NEdit inside the VNC viewer.
TightVNC apparently knows how to shuttle CUT_BUFFER0 back and forth between the Windows clipboard automatically. This means it can copy/paste to XTerm, but not to/from NEdit.
I'm in this strange situation where if I want to paste, now I have to paste (middle-click) into an empty XTerm, select it again, and then paste (middle-click) into NEdit.
Perhaps VNC could be fixed, but I suspect we should have some support for obsolete cut buffers if possible.