I am having some troubles with excessive foam from by bottled beer (its all bottled). My first brew (2 years ago) definitely had some geysers. The breakdown was 1/3 fine, 1/3 geysers and 1/3 under carbonated. This I've chalked up to ill-mixing of the priming syrup.
Since then I have had a few brews that are 'climbers'. Beers with foam/head that just climbs out of the bottle with varying degrees of quickness. Can I assume this is the cause of an infection? I have had beers with none, a few and a lot. I have a cream ale that foams a lot if am lucky I can pour the whole beer into a glass without the foam breaching the top. And it takes awhile for the head to subside. Great head retention.