So I had Pete's virgin 2.2 release on my phone, ran fine, full root access. Sapphire 7.0 was released, so what the heck, I formatted system/cache, and installed. But...lost root somehow. No SU app, no access. Applied su.zip in Recovery to regain access. Didn't work... Applied it a few more times, rebooted...nada. Wiped system/cache and installed CM6 Alpha 3...no root. Applied su.zip, still no su app, no root. Nandroided back to my backup of Pete's virgin 2.2 release. Root. Wiped system/cache, installed CM6 Alpha 3, no root. W-T-F?? Never seen this before...always wipe system/cache before a new ROM, never lost root before. Really appreciate any suggestions...I have access to CW recovery. Don't understand how flashing a rooted ROM could leave me w/out root access, or why installing an su zip doesn't add SU back in.