I've been getting security reports (ie when a new "bug" fix is due) as an RSS feed ever since I began running Ubuntu. About a year ago it broke but I found the new feed.
Now, in the past two days, I've been getting spam through the feed - well, I say spam, it's all sorts of junk announcements about all kinds of things. I do NOT want this. All I want is notification of bug fixes and similar.
It may be due to all the launchpad forums being amalgamated into a single one, but why they want to send me this junk I have no idea.
Anyone know how to fix the problem? A new feed URL, perhaps?
On further investigation I discovered that Thunderbird (on Windows) no longer queried the URL [ubuntu.com...] and that the other URL I had replaced it with now feeds newsletters; previously, although it probably still did, I was only getting the security reports.
I installed [ubuntu.com...] on a Ubuntu machine, using Thunderbird, and the feed worked, so I tackled the Windows version.
On Windows Thunderbird I deleted both ubuntu RSS feeds and, after rebooting Thunderbird, successfully installed [ubuntu.com...] as the correct feed.
Rebooting Thunderbird is important: without that the feed verification attempt failed.