I bought some compact fluorescent flood bulbs to replace the recessed
bulbs in my kitchen as they burn out. So far I've got 2 installed.

Both of them have this problem. About half the time they work fine.
They have the normal delay that compact fluorescent's have, but that's
fine. The other half of the time, only the very upper part of the
bulb lights. Then the light slowly "creeps" down the spiral. Takes
about 5 minutes!

Anyone else experienced this?