Just so you'll know: that's apparently the only checksum for ARDAgent, even though I'm now on 10.6.2:
find /var/db/receipts -name '*.plist' | while read x; do defaults read "${x%%.plist}" | grep ARDAgent && echo $VT_BOLD$x$VT_NORMAL; done
"System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/MacOS/ARDAgent" = <cffc33a1 b351a828 36c2b44a cd7a6f00 033893c3>;
/var/db/receipts/com.apple.pkg.Essentials.plist
In /var/db/receipts, next to each packagename.plist is the corresponding packagename.bom, which is presumably where the raw permissions can be found. There are no other files in the folder; that is, nothing like a.receiptsdb.
