I was watching Jimmy Kimmel off my 211 which puts its audio through My Dell PC last night and everytime there was a bit of audio that was loud (like applause or someone said something loud or the band was playing) there was a perceptible drop in the audio of everything for a second or two.
I don't know if it was a characteristic of the audio card on the PC or what, but I did not observe it when I moved to my 722k - same program - through my amplifier.