My front derailure was sticking a bit. Sure, I should have taken it off the bike, cleaned it thoroughly, and lubricated it, but I didn't have time.
I used several different oil based lubricants, but nothing worked.
Then, I sprayed some hardware store variety silicon lube and VOILE', it worked. It worked so well, I sprayed some on my rear derailure too.
Why don't I hear silicon spray lubricant mentioned more in bicycle maintanance circles? Is there something I am missing here - some organic problem with silicon lubricant that is waiting to bite me in the ssa?