A few things are likely; Your system has been running slow because you have several items that use the internet without your knowledge, or to check for updates, etc;
Since the power was out, I'd assume several (thousand) customers lost their internet ability as well. That should decrease the total traffic on your downline, and give you a better pingtime from the main server.
So it looks like it's running faster, when really it's just not lagging. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif