i find the graphical client a bit buggy on the display side as well. like on my 9700 card the full screen mode will sometimes nto work...it gets all speckled (like when a dvd movie glitches out). the app still responds though and i can "swith" back to normal (no big deal). also i've seen when in the normal windowed view the status and pie chart dissapear. the only way i've got it to come back is either minimizing it a few times (back and forth) or "configure" it to display or omit the logos or whatever.
also i've seen like a "drop shadow" effect on my 'mouse over' pop ups on the system try. or the popups don't match up. like i'll mouse over the red gear and it will display my "norton AV" pop up
again...no biggy but it's wacked. this particular display problems happens on all my pcs that are running the client.