I found an Applet regression on 
  Window7 64bbit w/
    Java6 (latest)
    Chrome (latest) and FF (latest)
in between [signed] [master] builds 
  803 (ok) - 825 (failure)
  608a8aaee0da2d32eeb6f9b4efe9c34013efda31..630d43be7a8cccf28632fc1f7542bb484382d775
Amusingly it works w/ Safari and IE,
which hints that the new EGL/ES initialization code crashed the JVM.
I will investigate this further soon ..
~Sven