We tried in bug 720377 to run a 10.7 build on 10.5 machines and we got this orange: http://people.mozilla.com/~armenzg/archive/bug720377.log#err0
I have not been able to reproduce this, but it looks like a case of us not spinning the loop is the places database (bug 721603). I will mark this one as depending on that and upload new builds once that bug is fixed.
Now that 721603 is fixed, I have uploaded new builds to http://people.mozilla.org/~respindola/builds/new/ Armen, can you try them? Thanks.
Sure. Next week though.
We did the testing. We can close this.