295188 - RSS feed copies the same articles multiple times on program relaunch

Status: RESOLVED DUPLICATE of bug 258465

(MailNews Core :: Feed Reader, defect)

Description

[Leo]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.8) Gecko/20050511 Firefox/1.0.4
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.8) Gecko/20050317 Thunderbird 1.0.2

[Note: This bug is similar to 265833, but involves a different version of
Thunderbird with slightly different circumstances.]

I have several RSS feeds from various news agencies (MSNBC.com, CNN.com,
Reuters, BBC, etc).  When I close the Thunderbird program and then load the
program again, the news feeds all search for articles.  However, rather than
simply downloading the new articles for each feed, it re-downloads *all* of the
articles for each feed.  For example, on MSNBC.com, 15 articles are downloaded.
 I close Thunderbird, open it again, and all the feeds search again.  When it is
finished, I have 30 MSNBC articles - the same 15, but now 2 copies of each one.

Reproducible: Always

Steps to Reproduce:
1. Open Thunderbird 1.0.2
2. Click File > New > Account...
3. Choose "RSS News & Blogs" radio button and click "Next"
4. Enter a name for the new account and click "Next"
5. Click "Finish"
6. Click on the new RSS account and click "Manage subscriptions"
7. Click "Add"
8. Enter a valid RSS feed URL.  This one works:
"http://rss.msnbc.msn.com/id/3032524/device/rss/rss.xml"
9. Click "OK"
10. When Thunderbird is done authenticating & downloading the feed, click "OK"
11. Click on the new RSS feed (If you used the example above, it should be
called "MSNBC.com: U.S. News")
12. Note the number of articles
13. Close Thunderbird
14. Launch Thunderbird
15. Click on the RSS feed account you just created
16. Click on the folder created by the RSS feed 
Actual Results:  
Thunderbird has downloaded two copies of every article in the RSS feed, one of
each when it was first created and the other copy on the re-launch.

Expected Results:  
Thunderbird should have recognized which of the articles were duplicates (based
on title, date, time, perhaps other info) and not downloaded the duplicates.

Comment 1

[Mike Cowperthwaite]

*** This bug has been marked as a duplicate of 258465 ***