RSS widget displays the wrong dates

I just opened up wordpress-powered jonnyjimison.com, and included two rss widgets on the front page, one from another wordpress blog of mine, and one from an xml file I update myself. Everything was working fine for a few days, but lately the dates displayed by the rss widgets are not the dates of the individual posts – all the dates show up as the current date. The original feeds are still accurate, it’s the display of the feeds that seems to be off. Does anyone have any clue what could cause this?
Thanks!