I have subscribed twice to the RSS feed for the EagleFiler forum. In each case, the top thread remains frozen at the thread that was most recent in the forum at the time I subscribed. (Best practices.... and Search OCR'ed..., respectively)
This does not happen with any of my other RSS feeds, they all update properly, so I'm guessing it's an issue with the C=Command forums.
I'm using Firefox 3.6.3 on a Mac running Snow Leopard 10.6.3. I've just added an RSS feed for the forums to Safari. I'll let you know if a few days if it remains stuck, too.