SABnzbd Forums

I have had several nzb fail during repair that I have successfully downloaded and manually repaired with another client (Newsleecher). The newsserver setup in both is almost identical, only in SABnzbd I have 4 of 8 newsservers with prio 0 and 4 with prio 1 where as they all have the same prio in Newsleecher. Is this where I need to look into to figure out why SABnzbd fails?

You can enable Debug logging in the Status and Interface Settings window. You can then see, after the download, what is responded by the servers.
Do you remember what the difference was? The number of blocks/data/etc.