I only saw this problem on my D1 when the Swype beta periods expired and we had to go get new licenses. On my TB, the lock ups got to the point that I had to drop Swype. Swype wants to sell their keyboard directly to device OEMs and limit the devices they formally support. They seem to have no interest in ever open marketing the product. So every few months, they time bomb and we have to interrupt what we're doing to re-license. We also get this unsupported device reboot square dance. For me, Swype has lost its value and I'm not going to choose a device over another because it has licensed Swype support.
I'm on trials of SlideIT and Swiftkey. No conclusions yet.