New feature in Firefox 16

CCleaner for Windows CCleaner Windows Suggestions
1

After installing Firefox 16 today on Windows XP, I ran the latest CCleaner (version 3.23), and then backed-up Firefox data files using the "Winmerge" utility to synchronize files and directories. I was surprised by a directory that unexpectantly appeared on the comparison screen, ie "thumbnails".

Specific path is "\\Documents and Settings\xxxx\Local Settings\Application Data\Mozilla\Firefox\Profiles\xxxx\thumbnails".

CCleaner had not removed the content (.png thumbnails) or the directory.

The "thumbnails" directory is adjacent to the "Cache" directory that CCleaner usually removes entirely.

Suggestion: please investigate, and determine if "thumbnails" needs be removed in the same manner as "Cache".

Thank you

2

It seems there is currently some important stuff kept inside that folder. It's worth reading the issue over at Bugzilla.

3

You can delete them using the winapp2.ini (file) located here:

http://forum.piriform.com/index.php?showtopic=32310

It's this entry from it:

[Thumbnails*]
LangSecRef=3026
SpecialDetect=DET_MOZILLA
Default=False
FileKey1=%AppData%\Mozilla\Firefox\Profiles\*\thumbnails|*.*|RECURSE
FileKey2=%LocalAppData%\Mozilla\Firefox\Profiles\*\thumbnails|*.*|RECURSE
FileKey3=%LocalAppData%\Mozilla\Firefox\Profiles\*\thumbnails-old|*.*|RECURSE

4

my guess is these should be covered in some way in the next ccleaner

5

Check this out.

Those thumbnails are screenshots!

Of critical privacy concern!!!!

http://www.dslreports.com/forum/r27972839-FireFox-Firefox-thumbnails-

6

Why not just set the FF pref as suggested in that thread?

about:config

browser.pagethumbnails.capturing_disabled

and set it to 'true'.