Is there a step-by-step on where to download the source / contribute fixes to bugs found in Openfire/Spark?
I am unsure if we have a guide. In general, check out our subversion source trees:
then generate ‘svn diff’ patches and attach them to posts on the forums. If you are really motivated, I can set you up with a Jira account and you can attach patches there. If then generate some more good patches, I can get you direct svn commit privs.