Eh.  Administrator intervention is required.  This attempts to degrade gracefully, but the user experience might be *very* degraded or even totally unusable depending what was in the fragment(s) that are dropped.  An error activating a fragment means something is very wrong, possibly layout corruption in the database.  This is about as `error` as we get short of crashing the whole portal experience?

I agree with the spirit of paring the logs down to only using `error` for things that are errors requiring administrator intervention, that you as a portal implementer really really really want to react to them.  But I think even paring down deeply, this error would make that cut.