i got extra decoders support installed so flv playback shouldn't be a problem. i also tried installing the deb through xterm but i just got errors on missing dependencies.
just now, i tried something else... i downloaded 240p flv videos and they played ok. but i think i remember playing the 360p files before installing the update. can somebody who haven't updated their Ogg support confirm this for me? Thanks!

@prankster
i just installed KMPlayer. same thing, can't play the 360p flvs but it's ok with the 240p's...