Error_log çıktısı?

Merhaba arkadaşlar. VPS'imde sitelerimin error_log dosyasında çık sık şu hata dönüyor. Neden olabilir bu? Yardımcı olur musunuz?

[29-Nov-2013 14:01:56 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php/extensions/no-debug-non-zts-20090626/xcache.so' - /usr/lib/php/extensions/no-debug-non-zts-20090626/xcache.so: cannot open shared object file: No such file or directory in Unknown on line 0
[29-Nov-2013 14:01:59 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php/extensions/no-debug-non-zts-20090626/xcache.so' - /usr/lib/php/extensions/no-debug-non-zts-20090626/xcache.so: cannot open shared object file: No such file or directory in Unknown on line 0
[29-Nov-2013 14:02:00 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php/extensions/no-debug-non-zts-20090626/xcache.so' - /usr/lib/php/extensions/no-debug-non-zts-20090626/xcache.so: cannot open shared object file: No such file or directory in Unknown on line 0
[29-Nov-2013 14:02:03 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php/extensions/no-debug-non-zts-20090626/xcache.so' - /usr/lib/php/extensions/no-debug-non-zts-20090626/xcache.so: cannot open shared object file: No such file or directory in Unknown on line 0
[29-Nov-2013 14:02:05 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php/extensions/no-debug-non-zts-20090626/xcache.so' - /usr/lib/php/extensions/no-debug-non-zts-20090626/xcache.so: cannot open shared object file: No such file or directory in Unknown on line 0
[29-Nov-2013 14:02:06 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php/extensions/no-debug-non-zts-20090626/xcache.so' - /usr/lib/php/extensions/no-debug-non-zts-20090626/xcache.so: cannot open shared object file: No such file or directory in Unknown on line 0
[29-Nov-2013 14:02:06 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php/extensions/no-debug-non-zts-20090626/xcache.so' - /usr/lib/php/extensions/no-debug-non-zts-20090626/xcache.so: cannot open shared object file: No such file or directory in Unknown on line 0
[29-Nov-2013 14:02:08 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php/extensions/no-debug-non-zts-20090626/xcache.so' - /usr/lib/php/extensions/no-debug-non-zts-20090626/xcache.so: cannot open shared object file: No such file or directory in Unknown on line 0
[29-Nov-2013 14:02:09 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php/extensions/no-debug-non-zts-20090626/xcache.so' - /usr/lib/php/extensions/no-debug-non-zts-20090626/xcache.so: cannot open shared object file: No such file or directory in Unknown on line 0
[29-Nov-2013 14:02:11 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php/extensions/no-debug-non-zts-20090626/xcache.so' - /usr/lib/php/extensions/no-debug-non-zts-20090626/xcache.so: cannot open shared object file: No such file or directory in Unknown on line 0
[29-Nov-2013 14:02:12 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php/extensions/no-debug-non-zts-20090626/xcache.so' - /usr/lib/php/extensions/no-debug-non-zts-20090626/xcache.so: cannot open shared object file: No such file or directory in Unknown on line 0
[29-Nov-2013 14:02:15 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php/extensions/no-debug-non-zts-20090626/xcache.so' - /usr/lib/php/extensions/no-debug-non-zts-20090626/xcache.so: cannot open shared object file: No such file or directory in Unknown on line 0
[29-Nov-2013 14:02:16 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php/extensions/no-debug-non-zts-20090626/xcache.so' - /usr/lib/php/extensions/no-debug-non-zts-20090626/xcache.so: cannot open shared object file: No such file or directory in Unknown on line 0
[29-Nov-2013 14:02:17 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php/extensions/no-debug-non-zts-20090626/xcache.so' - /usr/lib/php/extensions/no-debug-non-zts-20090626/xcache.so: cannot open shared object file: No such file or directory in Unknown on line 0
[29-Nov-2013 14:02:18 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php/extensions/no-debug-non-zts-20090626/xcache.so' - /usr/lib/php/extensions/no-debug-non-zts-20090626/xcache.so: cannot open shared object file: No such file or directory in Unknown on line 0

Hatalı yada eksik xcache yapılandırmasından.

Xcache nedir? Ben öyle bir şey kurmadım diye hatırlıyorum?

Servis sağlayıcınız kurmuş olabilir, php.ini içini bir kontrol edin, xcache.so satırı var mı.