This is caused by a bug in Google Mobile Ads, to the time this was written it had not been solved yet. Check the source for more information.
You have a different solution? A short tip here would help you and many other users who saw this issue last week.
- java.util.concurrent.TimeoutException: android.view.ThreadedRenderer.finalize() timed out after 10 seconds at android.view.ThreadedRenderer.nDeleteProxy(ThreadedRenderer.java) at android.view.ThreadedRenderer.finalize(ThreadedRenderer.java:412) at java.lang.Daemons$FinalizerDaemon.doFinalize(Daemons.java:191) at java.lang.Daemons$FinalizerDaemon.run(Daemons.java:174) at java.lang.Thread.run(Thread.java:818)