Twitter For WordPress — Doesn’t Update

I installed the plugin a few days ago. It worked fine except that it didn’t update my tweets immediately. Took a few minutes. I was ok with that. Then this morning I noticed it wasn’t updating at all. In fact if I leave caching on, it shows a tweet I deleted about 3 hours ago. If I turn it off it shows the latest tweet but my site “jumps” (I assume from the tweets loading) when I navigate my menu — except when I click home. Odd, that. Anyone have any ideas on this? And/or can anyone tell me where to delete the Magpie cache? My host suggested it’s in the database but I don’t see anything there or in my FTP or Cpanel either. Grrr.