LC 5.5 stability?

[Graham Samuel]

I am getting lots of hangs and crashes while trying to develop an iOS app on my Mac (with Lion 10.7.3). The version of LC 5.5 is 1479. The hangs seem to be when I do stuff in the IDE, and the crashes when I run my own scripts. One crash was caused by an attempt to set the layer of a background on a card other than 'this' card, which may be illegal (why?) but shouldn't have caused a crash.

I wonder if anyone else is having this experience, or whether it's just something in my setup. If others report similar experiences, I will try to get a couple of recipes to send to RR Support.

Graham