YES, this already happened to me!
Take me a while to figure out what was the problem...
The prob is in the floppy drive
this begins happening after i install Crossover Office, i cant figure why this happens after CXoffice install but reallu happens this way.
So you have to go to the Mandrake Control Center , then go to the Hardware tab and mount points, then u have to disable the supermount option for the floppy drive.
Then starts booting ok, after a while i puted again the supermount option for the floppy drive and the boot continued ok, but dont ask me why, cause i dont know how to explain, im not an expert