Folks,

It's been five days, it must be time for a POPFile release... Here's what's in v0.17.3.

 1. UI pages are no longer cached by browser so you don't have to force refreshes
    (particularly of the History page).  (Thanks to djjames for the fix suggestion)
   
 2. New Security tab in the UI that gathers together all the security features in one
    place. (Thanks to sschinke for beating the security bandwagon)
   
 3. New Stealth <nowiki>Mode/Server</nowiki> Mode for both POP3 interface and the HTTP (UI) sockets. By
    default POPFile is stealthed and can only be contacted from your machine.  You can
    open up access to POP3 and UI access with two command line options -localpop and 
    -localui (set to 1 by default, set to 0 for remote access) and through the UI on 
    the Security tab. (Thanks to sschinke for pointing out an error in the stealth code)
   
 4. History page has striping to make it easier to read. (Thanks for zonk3r for the  
    suggestion and for getting POPFile on Slashdot and making my life a living hell :-)
   
 5. Configurable TCP connection timeout (see the Configuration page) so that slow
    POP3 servers are given time to respond to POPFile's requests for a connection.
    (Thanks to ajrtome for suggesting this addition)
   
 6. Session keys in the web-based UI.  This prevents you from having your POPFile
    configuration messed up by an evildoer who sends you a URL on your local 
    machine that messes up POPFile through the UI.
   
 7. Added Next and Previous buttons on the History page for navigating the message
    history.
   
 8. I've reorganized the Buckets page to make the things people do often appear
    nearer the top.
   
 9. Removed the Top 10 Words code and output as it was producing errorneous output
    and I need to rework the underlying datastructures to make them more efficient
    before getting the Top 10 correct.  (Thanks for biljir for the bug report)
   
10. Added new Statistics to measure the accuracy of POPFile.  POPFile now keeps 
    track of the number of messages it has analyzed and the number of times you
    had to reclassify a message.  Statistics are kept after 100 messages have been
    downloaded.

11. A bug in the detection of blank subject lines meant that it was possible for
    the History page to have an email you couldn't click on.  (Thanks to djjames for
    showing why this was happening)

12. insert.pl updated so that it works correctly with filenames that contain spaces.
    (Thanks to someone whose mail I have managed to lose)

13. Changed the History page so that you can reclassify a message as the category that
    the message was already in so that you can reinforce POPFile's classification of a
    message.  This is an experimental feature and is turned on with the -reinforce 1
    command line option.  (Suggested by lowdoellwnguy)

14. Some clients were timing out when receiving very large messages and others were
    showing incomplete messages.  Implemented the same scheme as used by Norton 
    Antivirus.  If more than one second passes during the download and classification
    of a message, POPFile will stream <nowiki>X-POPFile-TimeoutPrevention:</nowiki> headers to the 
    client to keep it happy. (Thanks to zonk3r for this suggestion)

15. Merged a patch that makes the output of bayes.pl, Lookup and message coloring
    more accurate (Thanks to biljir for his hard work on the patch)

16. The Remove Page button on the History page was doing the wrong thing and deleting
    the wrong page of messages.  (Thanks to biljir for pointing this out).

17. All form fields are now checked for validity and error messages printed when entering
    a value that doesn't make sense.  (Thanks for sschinke and others keeping me honest
    on the UI)

18. We weren't recalculating not_likely when reclassifying messages which could lead to
    strange results early on in the teaching process.  (biljir made the original bug 
    report)

19. Merged in a patch that allowed more punctuation to be recognized in the mail
    parser. (Thanks to biljir for that patch)

20. In the Windows release (see below) there is a new option to run POPFile in the 
    background getting rid of the command/cmd/DOS shell box that's been annoying people. To
    shutdown POPFile when running in the background click the Shutdown link in the UI. 
    (Thanks to brad_morgan and lex_luthor for the wperl tip)

21. We were hanging on to old message files when we should have been deleting them after
    24 hours. We now delete after 24 hours. (Thanks for biljir for pointing out this problem)

22. If the mail message contained the Subject: line written SUBJECT: it was missed by 
    POPFile. We are now case insensitive on headers. (Thanks for biljir for pointing out 
    this problem)

23. A problem with regular expression was being caused by some invalid characters stored in
    the buckets, these are now filtered out.

Also there are now two versions of POPFile...

1. The cross platform version is being released as a source code zip file and should
   work on Windows, Linux, Mac OS X, *BSD, Solaris, ...  It has the file name
   popfile-0.17.3.zip.  In order to use this you will need to get Perl installed on
   your system.

2. There is a Windows version that comes with an installer and does not require Perl.
   The Windows installer puts a minimal Perl installation, all the POPFile source code
   and support files in C:\Program Files\POPFile (you can change this) and adds 
   shortcuts to the Start Menu under POPFile.  The file name for the Windows version is
   popfile-0.17.3.windows.zip.  Run setup.exe to install.  I have done my best to keep
   this download really small, it currently weighs in at 507kB.

They both contain the exactly the same source code.