Pressing the keys didn't seem to work, so I tried switching keyboards. I've still got the problem. I didn't really think it was a stuck key anyway. I'd have noticed issues in other programs as well. The fact that it started happening right after I got 6.14 indicates to me that this is an issue with the new version. Either there's a bug, or something I use in my scripts has been phased out. The latter seems unlikely, however, since it happens with both my aliases file and my events file.