21.5 Inch Performance Issues

[littlelarry33]

Before my new iMac took 2 minutes to boot up and I re-installed SL and it is now fixed but now, like the 27 inch, the videos on youtube are really choppy and the sound is messed up. It only happens occasionally and is fixed with a restart and is really annoying. Does anyone know how to fix this?

 

[Hellhammer]

That's due the problems in Flash. We can only hope that Apple will fix these issues

 

[gjw4u]

OP, there is another thread regarding a possible solution:
new iMAc Performance Issues? Try THIS