News for the iPad 2 wifi on 7.0.4: we looked at it with @planetbeing. We know what is the issue now, we're working on a clean fix.
1.0.2 (beta) is up on http://evasi0n.com . Fixes iPad 2 wifi boot loop.
You can head over to our evasi0n download page to grab the update. Note this is a beta release, so if it still does not work, please be patient.