No replies? Am I the only one lucky? Oh well. I'll call Apple on Monday and see what they say. Probably the only choice they'll give me is to repair. Although the problem existed from day one, I do not not hope that Apple will honor a replacement now, three weeks later.
So far my luck with Macs was only 50%:
iBook 500 - no issues in 2 years
iBook 700 - 3 logic board replacements and other smaller endless repairs
12" PB 1GHz - no issues in 14 months
12" PB 1.5GHz - defective SuperDrive. What's next?
I assume that reliability of Apple laptops is higher than 50% and I am just "lucky".