after that,id make sure there is not an outage in your area. could be that no one has data
failing the easy and obvious,id flash a stock gingerbread RUU. you are s-off,right?
you can find a PB31IMG or a .exe file for 2.3.4 here: Stock Images | PvilleComp's
afterwards,you can simply flash a recovery in hboot,then flash the superuser files to re-root. see the other sticky(regain root with s-off) for more specific directions and file links.
if you arent s-off yet,do that before upgrading yourself back to gingerbread.