Comment 13 for bug 482721

I've just started to encounter the issue with my Dell M1530. `lshal` reports four different kill switch states with the Dell ones being possibly in conflict with the other two statues. A quick work around for me was to `rmmod dell_laptop` module after which the kill switch starts functioning as normal.

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=544217 sounds quite similar. I'll have to have a play around a bit more to see if it's the same issue. I wonder if this modules has been enabled in a recent Kernel update?