I just did a major update in december where I upgraded from Jenkins 1.409.2 and plugin 0.4 to 0.7. Suddenly Ive had strange problems in Fresstyle jobs that run maven. Sometimes maven can not find the version and it fails the job. But the next time (wihtout any changes), it will find the version and the build completes. This happens once every 10th build. Upstream from the failing job, we build together the artifact that the build should use.

Has you seen anything like this?
Is there any timing problems between the upstream job and the job that should be accounted for?