Coming back from a ban leaves things a little shaky.  The nightly cron takes care of any calculations not done immediately.  Back when I built this site, we were on some shitty hardware that was way over priced, so some things, like mass votes via the trainer of what have you, are a tad delayed in appearing.  There's a nightly cron that runs ~2am EST that cleans up in the event things need to be cleaned, all in the namesake of providing a faster user experience.  With the new hardware we're on, that could be done away with, but there's a shit load required to make that happen, like the KHv3 rewrite.