I've just updated to r347946 from r344695. Upon booting the loader, I get: panic: free: guard2 fail @ 0xcd8de040 + 2061 from unknown:0 I'm using gptzfsboot, and the boot blocks are current. The previous loader works fine - boot loader_lua and loader_4th are ok. But the current loaders, both ula and 4th, fail with the same panic (the message reproduced is from loader_4th). Cyrus Rahman