This depends on how often uTorrent checks the RSS feed. It might be every few minutes or every hour (I think its around every 5-10 minutes). Of course restarting or clicking "update feed" will speed this up.
For your screenshots, try using "Snipping Tool" (its built into Win7), it lets you just screenshot a smaller (relevant) part of the screen ;)
can you change the Frequency of updates in utorrent?