My delete key stopped deleting. Being busy, I didn't really think about it much, just presumed I'd need a new keyboard and worked around it. But later I discovered that, no, it was a Slickedit (v9, XPProSP3) problem: the binding on the delete key had gone away. So I rebound it to delchar. Which works fine, except that it seems I can no longer join two lines by deleting the first line's eol byte.
Any ideas about what might be going on? Is there some other switch I also need to restore?
I'm hoping that I'm not going to have to reinstall, because it's such a pain in the bum to re-initialise all the flavorings.