Atom feeds generated by Connections on Homepage or Community recent updates do not contain meaningful names in <title> regarding Files.
All other types of entries seem to have proper object names name but Files have the only reference in <link>.
To reproduce it, simply use the link "Feed for these entries" in the bottom of the Homepage.
Every event there is "correct", except the information regarding files.
For example event from wikis: "Administrator commented on the wiki page Internal Wiki" where the Internal Wiki is the name of the wiki.
In case of files, such event would be like "Administrator commented on file" without the name of the file.
There are multiple entries for files. I just found on my homepage e.g.
User A edited a file.
User B shared a file with the community xxxx .
User C commented on your file.
The title of the news entry for a file need to contains the filename. Note that the XML structure can stay untouched, but the value of <titlle> needs a filename to be inserted.