Since unlocking my phone has been happier on Orange in the UK than it EVER was on O2, BUT, I'm getting a lot of instances where I can't slide to answer a call!

If I hang up with the power button, I can then slide to unlock, but not to answer it?! It seems to be happening more and more frequently, it wasn't doing it at first when I unlocked.

Obviously this is a bit of a downer. Has anyone else had this?