Our bug with savepnpc which causes the post-command to start one minute after the pre-command even if the backup is not done yet is now hopefully near the resolution point. We opened a problem report for this in July, this week we where told that there is a patch for it available. The bad part is, that it is available since 3 weeks and nobody told us. The good part is, that we have it installed on a machine now to see if it helps (all zones there seem to be OK, but we have zones where it sometimes works and sometimes fails, so we are not 100% sure, but we hope the best). We where told that it will be included in Networker 188.8.131.52.
Our other issues are now at least not in a helpdesk-loop anymore, they seem to have reached the developers now.