lol, i love how winrar does the same thing. it's like they don't even care if you continue to use their product after the "trial" expires
it's just a minor inconvenience that you have to click the ok button when it's over.
it's like saying "you can only use me for 30 days, after 30 day's i'm going to annoy you with a popup when you first start me, BUT if you buy me you don't have to worry about it"