apache locale continua a crashare

[jimbo0]

salve, ho un sito in joomla che mi fa continuamente crashare apache
questa è la firma del problema che mi genera windows 7

Firma problema:  Nome evento problema:    APPCRASH
  Nome applicazione:    httpd.exe
  Versione applicazione:    2.4.3.0
  Timestamp applicazione:    502f70a3
  Nome modulo con errori:    php5ts.dll
  Versione modulo con errori:    5.4.7.0
  Timestamp modulo con errori:    505114f8
  Codice eccezione:    c00000fd
  Offset eccezione:    000398c9
  Versione SO:    6.1.7601.2.1.0.256.1
  ID impostazioni locali:    1040
  Informazioni aggiuntive 1:    3f43
  Ulteriori informazioni 2:    3f433ba37ee670bb0de9e555a5cb172c
  Ulteriori informazioni 3:    c4d4
  Ulteriori informazioni 4:    c4d4f0e6304030c937d28a747b4531a5


Leggere l'informativa sulla privacy online:
  http://go.microsoft.com/fwlink/?linkid=104288&clcid=0x0410


Se l'informativa sulla privacy online non è disponibile, leggere quella offline:
  C:\Windows\system32\it-IT\erofflps.txt

queste le ultime righe dell'error.log di apache

[Thu Jan 02 15:30:09.642150 2014] [mpm_winnt:notice] [pid 5764:tid 248] AH00456: Server built: Aug 18 2012 12:41:37[Thu Jan 02 15:30:09.643150 2014] [core:notice] [pid 5764:tid 248] AH00094: Command line: 'c:\\xampp\\apache\\bin\\httpd.exe -d C:/xampp/apache'
[Thu Jan 02 15:30:09.644150 2014] [mpm_winnt:notice] [pid 5764:tid 248] AH00418: Parent: Created child process 4460
[Thu Jan 02 15:30:12.124292 2014] [ssl:warn] [pid 4460:tid 260] AH01873: Init: Session Cache is not configured [hint: SSLSessionCache]
[Thu Jan 02 15:30:12.192296 2014] [mpm_winnt:notice] [pid 4460:tid 260] AH00354: Child: Starting 150 worker threads.
[Thu Jan 02 15:30:15.340476 2014] [mpm_winnt:notice] [pid 5764:tid 248] AH00428: Parent: child process exited with status 3221225725 -- Restarting.
[Thu Jan 02 15:30:15.954511 2014] [ssl:warn] [pid 5764:tid 248] AH01873: Init: Session Cache is not configured [hint: SSLSessionCache]
[Thu Jan 02 15:30:16.011514 2014] [mpm_winnt:notice] [pid 5764:tid 248] AH00455: Apache/2.4.3 (Win32) OpenSSL/1.0.1c PHP/5.4.7 configured -- resuming normal operations
[Thu Jan 02 15:30:16.011514 2014] [mpm_winnt:notice] [pid 5764:tid 248] AH00456: Server built: Aug 18 2012 12:41:37
[Thu Jan 02 15:30:16.011514 2014] [core:notice] [pid 5764:tid 248] AH00094: Command line: 'c:\\xampp\\apache\\bin\\httpd.exe -d C:/xampp/apache'
[Thu Jan 02 15:30:16.013514 2014] [mpm_winnt:notice] [pid 5764:tid 248] AH00418: Parent: Created child process 5736
[Thu Jan 02 15:30:18.049631 2014] [ssl:warn] [pid 5736:tid 260] AH01873: Init: Session Cache is not configured [hint: SSLSessionCache]
[Thu Jan 02 15:30:18.112634 2014] [mpm_winnt:notice] [pid 5736:tid 260] AH00354: Child: Starting 150 worker threads.
[Thu Jan 02 15:31:39.816307 2014] [mpm_winnt:notice] [pid 5764:tid 248] AH00428: Parent: child process exited with status 3221225725 -- Restarting.
[Thu Jan 02 15:31:40.500347 2014] [ssl:warn] [pid 5764:tid 248] AH01873: Init: Session Cache is not configured [hint: SSLSessionCache]
[Thu Jan 02 15:31:40.569351 2014] [mpm_winnt:notice] [pid 5764:tid 248] AH00455: Apache/2.4.3 (Win32) OpenSSL/1.0.1c PHP/5.4.7 configured -- resuming normal operations
[Thu Jan 02 15:31:40.569351 2014] [mpm_winnt:notice] [pid 5764:tid 248] AH00456: Server built: Aug 18 2012 12:41:37
[Thu Jan 02 15:31:40.569351 2014] [core:notice] [pid 5764:tid 248] AH00094: Command line: 'c:\\xampp\\apache\\bin\\httpd.exe -d C:/xampp/apache'
[Thu Jan 02 15:31:40.570351 2014] [mpm_winnt:notice] [pid 5764:tid 248] AH00418: Parent: Created child process 6016
[Thu Jan 02 15:31:42.280448 2014] [ssl:warn] [pid 6016:tid 260] AH01873: Init: Session Cache is not configured [hint: SSLSessionCache]
[Thu Jan 02 15:31:42.386454 2014] [mpm_winnt:notice] [pid 6016:tid 260] AH00354: Child: Starting 150 worker threads.

questo è l'errore che vedo nella finestra di controllo di xampp

15:29:37  [Apache]     Problem killing PID 4836
15:29:37  [Apache]     Check that you have the proper privileges

helpmi please