I have a similar problem. Advice gratefully received!
I have 4 wall mounted light fittings in the lounge, all wired to one switch near the door. For several years I had uplighters with 150 watt halogen tubes in, which worked fine but smudged the wall with heat/dust marks. They were on a dimmer and worked fine.
Replaced the fittings with uplighters with 40watt G4 capsules (might be GU10). These are on a switch rather than a dimmer. One of the four blows every few weeks. GuessI need to check the switch connections.