it worked!! i updated the log to look like:

1360906559: INSTALL SESSION START
1360906592: UPGRADED zimbra-core_7.2.2_GA_2852.UBUNTU10_64_amd64.deb
1360906603: UPGRADED zimbra-ldap_7.2.2_GA_2852.UBUNTU10_64_amd64.deb
1360906613: UPGRADED zimbra-logger_7.2.2_GA_2852.UBUNTU10_64_amd64.deb
1360906633: UPGRADED zimbra-mta_7.2.2_GA_2852.UBUNTU10_64_amd64.deb
1360906644: UPGRADED zimbra-snmp_7.2.2_GA_2852.UBUNTU10_64_amd64.deb
1360906685: UPGRADED zimbra-store_7.2.2_GA_2852.UBUNTU10_64_amd64.deb
1360906698: UPGRADED zimbra-apache_7.2.2_GA_2852.UBUNTU10_64_amd64.deb
1360906715: UPGRADED zimbra-spell_7.2.2_GA_2852.UBUNTU10_64_amd64.deb
1360906715: INSTALL SESSION COMPLETE
1360906723: CONFIG SESSION START
1360906723: CONFIGURED BEGIN
1360906745: CONFIGURED BdbMigrated6.0.0_GA
1360906746: CONFIGURED LdapMigrated6.0.0_GA
1360906747: CONFIGURED END
1360906748: CONFIG SESSION COMPLETE

(added the last two lines) and it went right through. also, now it looks like the file was correctly upgraded this time.

thanks much for the help, quanah - really appreciate it!
dwf