adobe flash player security warning

[trevorthetiger]

Hey everyone this is my second day with my new macbook pro which is the first apple computer ive ever owned. im also new to the forums so please excuse me if this is in the wrong place. I was looking at some widgets and got the asteroids widget from the apple website. well it downloaded and worked fine but then an "adobe flash player security warning" box popped up with text under it that went something like "trevor/library/widgets/asteroids". i tried to close it but just got the spinning beach ball whenver i moved the cursor over it. i ended up just powering off my comp and when i turned it back on the box was gone. im just a little paranoid about the health of my computer since ive switched from the disease ridden windows pcs. im just looking for insight into what the box was or meant? thanks for the help!