For the veterans, this might be a somewhat comedic "problem" inquiry.
But... our campaign queue has been receiving and emptying campaign activity almost instantly since Friday, but we cannot find discrepancies in # of objects synced or email activity, etc. Salesforce sync is still enabled and runs every 15 minutes or so.
This is not normally expected. There are a few campaigns that have always clogged up the queue. They are also still running as expected after monitoring smart campaign results, etc.
Looks like our server cluster hasn't changed, either.
Color me suspicious.