Description
A problem caused this program to stop interacting with Windows.

Problem signature
Problem Event Name:    AppHangB1
Application Name:    perl.exe
Application Version:    5.10.0.1004
Application Timestamp:    48bef0d8
Hang Signature:    6b71
Hang Type:    0
OS Version:    6.0.6000.2.0.0.768.3
[download]

Although a Message Box would work with File::Tail, it will not work for this because I need more than one alert up at one time.

use warnings;
use File::Tail;
use Win32::GUI();
use Win32::Sound;

@alert = ['a'..'z'];
$i=0; $p=1;

my $line;
my $filename = "log3.txt";
my $file=File::Tail->new(name=>$filename);
while (defined($line=$file->read))
{
      if($line=~ /(\s+)(\d{1,4})(\.\d{1,4}){3}(\s+)/)
      {
          &Build_Window;
          ++$i; ++$p;
      }
}
Win32::GUI::Dialog();

sub Build_Window
{
        if($i==50){ $p=1; $i=0;}
        $datetime = localtime();
        $alert[$i] = new Win32::GUI::Window(-name => "Alert", -width =
+> 500, -height => 150, -pos => [$p*10, $p*10]);
        $font = Win32::GUI::Font -> new(-name => "Arial", -bold => 1);
        $alert[$i] -> AddLabel(-text => $datetime, -font => $font);
        $alert[$i] -> AddLabel(-text => "SNORT ALERT: MALICIOUS BEHAVI
+OR DETECTED!", -font => $font, -top => 50);
        $alert[$i] -> AddLabel(-text => $line, -font => $font, -top =>
+ 75);
        my $t1 = $alert[$i] -> AddTimer('T1', 1000);
        #Win32::Sound::Play("SystemExclamation");
        $alert[$i] -> Show();
        $alert[$i]->DoEvents();

        sub T1_Timer { return -1; }
        sub Alert_Terminate { return 1; }
}
[download]

After reinstalling Perl, all that remains is that I cannot interact with the windows that I create. Any ideas are welcome, and thanks to those who have given me advice and ideas already, you are greatly appreciated.