The Lucalox Superlife have no re-strike time, there are some other lamps made like this as well.
http://www.gepc.pl/lighting/do_pobrania/Lucalox%20-%20Ulotka%20(angielski).pdf
Also, on page 4 they have a short explaination of why they might be blink off and on, possibly due to wind or traffic vibration? Next guess would be strange voltage disturbance?
