User-Agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0 Build Identifier: Thunderbird 0.9 (20041103) Using TB 0.9, I've added the planet.mozilla.org RSS feed (see URL) to the News & Blogs account. All my other feeds (Fink, Nature, /.) work OK, and p.m.o works fine _except_ for Hixie's posts. In these cases, the post first shows up normally only once, but then after a day or two, the same post reappears next to the original. "Small and beautiful" just showed up again today (orig date is 2004-11-19) for the third time. Reproducible: Always Steps to Reproduce: 1. Add the p.m.o URL to the feeds for Thunderbird 2. Watch for Hixie's posts to get added more than once 3. Actual Results: Some of Hixie's blog entries get added again after a couple days. Some twice (eg. Keeping busy; It's really bad), some 3 (eg. Small and beautiful; Winter). The multiple copies don't appear all at the same time, but each new copy comes around every other day or so. Expected Results: Only one entry for Hixie's thoughts. I'm posting this under Thunderbird since the feed itself seems to be OK (the p.m.o website doesn't show the multiple entries, for example). However, I don't have another RSS feed program to test it on, so it might actually be an issue with the RSS feed itself. I don't think this is Bug 267139 since I'm not deleting any of the messages but leaving them all in their original feed folder.
Adding Ian to the CC list since it's his blog where this issue shows up. Going to check if I also get the duplicate entries by directly reading Hixie's RSS feed.
Found dupe. Seems to be a general issue and not just with Hixie's blog (direct link to his also caused duplicates, btw). *** This bug has been marked as a duplicate of 258465 ***