I have been having his issue the last couple of days as well. The aiming indicator won't move, the cursor won't change into a "hand". As stated above it is with the Google Chrome browser. Re-installing Chrome seemed to fix the problem, but it is back.
It's a weird problem as maximizing the pop-up window to full screen allows the aiming indicator to work, but I like playing in a smaller window.
Don't know if it is a browser issue or Flash Player issue.
I also have issues with a stuttering meter using IE or Maxthon browsers, I have pretty much given up on them, so I am unhappy about having problems with Chrome (meter works just fine using Chrome.)