LR 1.3.1 strange behaviour: L key adds keywords and removes pictures from collection

Question

After updating to LR 1.3.1 yesterday I found a very strange behaviour that I cannot explain: While in the Library module and looking at a picture from a collection (in loupe mode) I cycle through the different light modes using the L key. Then suddenly (after several hits of the L key) a keyword is added (not always the same keyword) and at the same time an unknown number of pictures is removed from the collection. The keyword is not added to the picture I was currently viewing, but to another one from the same collection. This has not happened before and I have no idea what is going on. I can restore the collection by relaunching an older catalog but of course this does not solve the problem. Can anybody help?
(PC, Win XP prof SP 2, 4 Gig RAM)

Answer 1

It is possible that instead of hitting the l key, or perhaps within the same sequence of hits your are in fact accidentally hitting the k key.
K is the shortcut for "Add shortcut keyword"
Of course you would have had to set that particular keyword at some point and it does not explain the different keywords being assigned.
Unless the alt key was involved somehow and you were rating the images with 1-9 numbers. That would account for different keywords being assigned and would seem arbitrary.
To check: look at one or two of the images that you may have rated using a number key and then look at the keyword set the keyword came from. Press the alt key and a number from 1-9 will appear next to the keyword. If they match then thats the answer.
If you weren't rating the images this way then.....??
Perhaps there is a fault with the keyboard itself rather than the program.
David