RC 1.21 has become crashtastic

I've been using release candidate 1.21 for days without too much trouble, but tonight I can't stay connected for 10 minutes.

Has there been an un-announced server roll-out or something?

I have a script that when I compile it using the non-mono compiler and then invoke its menu, RC1.21 will crash 100% of the time. If I then re-log and run the script, it runs fine, so it seems to be the compiler that sets up the condition for the crash and perhaps the blue dialog that causes the crash.

But I'm also getting crashes when I'm not doing anything at all, and it occurred to me that I don't recall getting any group notices, so maybe it's also crashing every time I receive one of those.

I did get a couple inventory offers (also blue dialogs) without crashing.

Last couple of days I've been crashing more often with the regular viewer, might just be one of those things.