Not Hard
It seems that the blocks only follow one pattern, thus you can leave your cursor in the top left or bottom right. I must have sat there for 2 minutes before throwing my mouse across the room, creating an explosion which signalled the end of the game. Apparently that 2minutes was only 18.03 seconds. Me thinks you may need to review the timer in the game. And possibly add a random bounce factor in or something. I don't know, I've never made flash and I'm drunk. But I vote a lot, and can spell a lot correctly. Not like other people who spell it alot. Now I'm not saying that my spelling is any good, but that just pisses me off. PS - The graphics, I thought, were actually quite good, maybe a cursor change or something. Once again see my previous refernce too my lack of flash creation.
Keep up the good work, sorry for rambling.