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[ BUILD # : 200510261858 ] [ JDK VERSION : 1.5.0 ] Go to Tools->Options->Keymap->Profile. Choose Emacs. Click on the OK button. In the editor, select text and copy it (any way). Now hit Ctrl-Y and the code doesn't paste. If you right-mouse click and select Paste, the text is pasted.
This is a known issue, already tracked in issue 64624. Thanks for reporting. *** This issue has been marked as a duplicate of 64624 ***