This issue has been fixed.
There seems to be an issue with displaying glow RSS feeds in the RSS widget on glow blogs.
Glow RSS Feeds display on external wordpress sites in RSS widgets.
External sites RSS display on glow blogs in the widgets (for example several feeds are displayed on this help blog).
Glow Blog RSS Feeds do not display on the RSS feed widget on another Glow Blog.
If you have several RSS widgets that use Glow Blog feeds on your blog it will slow the page load down. It is a good idea to remove them until we get a fix. You should drag them to the ‘Inactive Widgets’ area so that you do not lose the settings.
This issue is probably related to infrastructure and a fix will be rolled out in our update cycle, sometime after phase 1.1