Comment 3 for bug 54068

Two potential causes come to mind as to what might be going wrong:

(1) Some kind of breakage occurs in nedit or lesstif (probably lesstif, given what people are saying about a related bug) that makes it stop working.

(2) Lesstif does not interact correctly with the environment (X11, KDE, etc.) and thus is not able to properly use the clipboard.

Just now, I had this problem occur, so I closed all nedit windows and ensured that no nedit or nc processes were running. When I restarted nedit, copy/paste STILL did not work. This suggests, perhaps, option (2).