But Good light holds, not long

I bought two of these lamps months ago about two.
With 5 W and 540 lumen, the energy yield is above-
average high. The lamps are comparatively light
and also the color of light is at 2700 - 3000 K pleasant,
both for domestic use as well as for the office. This
Days now (January 2013) began one of them to flicker,
shortly thereafter the light intensity dropped sharply.
Now the lamp is zappenduster ... My personal
Conclusion: never again !!