$mw->Label(-text => "Path:")->
                                          grid(
                                              -row => 0,
                                              -column => 0,
                                              -sticky => 'w');
        my $pathEntry = $mw->Entry(-width => 50, -textvariable => \$fu
+ll_path)->
                                          grid(
                                              -row => 0,
                                              -column => 1,
                                              -sticky => 'w');

        $mw->Button(-text => "Browse...", -command => sub {print $full
+_path})->
                                          grid(
                                              -row => 0,
                                              -column => 2,
                                              -sticky => 'n');

        $mw->Button(-text => "Add/Update!", -command => [\&addUpdateBu
+ttonPressed])->
                                          grid(
                                              -row => 1,
                                              -column => 1,
                                              #-columnspan => 3,
                                              -sticky => 'n');


        $mw->Label(-text => "Progress:")->
                                          grid(
                                              -row => 2,
                                              -column => 0,
                                              -sticky => 'w');
        $progressLabel = $mw->Label(-text => "0 / Unknown")->
                                          grid(
                                              -row => 2,
                                              -column => 1,
                                              -sticky => 'n');
        my $variable = 24;
        $progressBar = $mw->ProgressBar(
            -width => 16,
            -length => 400,
            -anchor => 'w',
            -from => 0,
            #-to => 100,
            -blocks => 10,
            -gap => 0,
            -colors => [0, 'green', 50, 'yellow' , 80, 'red'],
            -variable => \$statics{'files'}
        )->
                                           grid(
                                              -row => 3,
                                              -column => 0,
                                              -columnspan => 3,
                                              -sticky => 'n');



        &centerWindow($mw, 410, 100);
        $pathEntry->focus;

        MainLoop;


sub addUpdateButtonPressed {

    print "Getting statics from: " . $full_path . " ...\n";

    my $total_files = &countFilesTotally($full_path);

    print "Files found: " . $total_files . "\n";

    $statics{'files'} = 0;

    $progressLabel->configure(-text => "0 / " . $total_files);
    $progressBar->configure(-to => $total_files);
    $progressBar->repeat(500, sub {$progressBar->update});


    #threads->create("recursive", $full_path);
    &recursive($full_path);
}

sub recursive {

    my $dir = shift;

.. do alot of stuff ...

}
[download]

What if you try to explictily update it with $progressBar->value( $statics{'files'} ) in your recursive loop instead (and remove the -variable line from the $mw->ProgressBar() call)? Could be that it's the linked scalar wthat's not working properly (i've heard of issues like that before, too)..

Side question -- i don't see a "my" in front of $progressBar .. are you not using strict/warnings, or just declaring some stuff at the top c-style?