Power Light flashes when switching on my Mac mini

I recently experienced a strange behavior of my Intel Mac mini (Core solo CPU): After switching on the Mac I do not hear the music clip but instead the power light at the front flashes. It is a different kind of flashing than when the Mac mini is in sleep mode. It flashes with a frequency of about one period per second.
After switching off the Mac mini pressing the power switch at the rear side for about 5 seconds and then switching on the Mac mini again the computer performed a completely normal boot process.
I assume that the flashing of the power light does have some specific meaning. But I could not find any information about this behavior in the manual.
Any ideas are welcome!
Regards
Adalbert.
Intel Core solo Mac mini Mac OS X (10.4.8)

I assume that there is a communication problem with
any of the attached hardware (keyboard, maus,
display). Are there specific light signals (flash
sequences) for any of the peripherals not being
detected?
No. Logically, if the system doesn't detect a device, it would not know to give a warning that the device wasn't detected. The only indicators the system will give during startup, are the ones listed in the article to which Doug gave the link, and if your mini gives any startup warning which meets the description given in that article, then you have that specific problem with your system. The fact that the system also startup correctly at other times simply means the problem is an intermittent one. Clearly, intermittent or not, it still requires to be fixed.
Since the mini is new (albeit from the refurb store), if you are not sure what the flashing light actually means, call Apple. The system is under warranty and if faulty, they will fix it. If you have an Apple store in reasonable reach, take the system in and talk the issue over with one of their service people.

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