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Both were quick fixes, but the recent one took me a bit to notice because it was okay when I first signed up for the feed and then I made some changes to the site. The feed got messed up, but the original title persisted in my RSS reader.
If you install a plugin or module or theme or whatever that might effect your RSS feed, it's probably a good idea to unsubscribe, clear any cache and resubscribe just to make sure it's okay.
I'm a big believer in using the sites, tools and so on that you create for users. Of course, it's not always possible, but does give a level of insight (and involvement) that IMO is valuable.
And RSS feeds break easily ;)