either your handling the bulbs incorrectly, installing wrong (both of these are doubtful according to your posts), or your headlight wires could be messed up (there was a recall on the wires at some time).
98.5 SVT
91 Escort GT (almost sold)
96 ATX Zetec (i brake to watch you swerve)
FS: SVT rear sway bar
WTB: Very cheap beater
CEG Dragon Run - October 13-15