Error php strict

[ancalo]

hola tengo un aprendiz de informatico que me esta tocando lo servidores............ y ya me estoy volviendo loco................. me quedan algun error que no le saco punta........... en los los de apche tengo este errro alquien me podria ayudar...........

[error] [client 77.209.130.245] PHP Strict Standards: Non-static method Browser::singleton() should not be called statically in /usr/share/psa-horde/lib/core.php on line $
[Thu Sep 26 10:35:13 2013] [error] [client 77.209.130.245] PHP Strict Standards: Non-static method String::lower() should not be called statically, assuming $this from incompatible context in /usr/$
[Thu Sep 26 10:35:13 2013] [error] [client 77.209.130.245] PHP Strict Standards: Non-static method String::lower() should not be called statically, assuming $this from incompatible context in /usr/$
[Thu Sep 26 10:35:13 2013] [error] [client 77.209.130.245] PHP Strict Standards: Non-static method Util::nonInputVar() should not be called statically in /usr/share/psa-horde/imp/lib/base.php on li$
[Thu Sep 26 10:35:13 2013] [error] [client 77.209.130.245] PHP Strict Standards: Non-static method Registry::singleton() should not be called statically in /usr/share/psa-horde/imp/lib/base.php on $
[Thu Sep 26 10:35:13 2013] [error] [client 77.209.130.245] PHP Strict Standards: Non-static method Horde::loadConfiguration() should not be called statically, assuming $this from incompatible conte$
[Thu Sep 26 10:35:24 2013] [error] [client 31.4.62.236] PHP Strict Standards: Non-static method Browser::singleton() should not be called statically in /usr/share/psa-horde/lib/core.php on line 56,$
[Thu Sep 26 10:35:24 2013] [error] [client 31.4.62.236] PHP Strict Standards: Non-static method String::lower() should not be called statically, assuming $this from incompatible context in /usr/sha$
[Thu Sep 26 10:35:24 2013] [error] [client 31.4.62.236] PHP Strict Standards: Non-static method String::lower() should not be called statically, assuming $this from incompatible context in /usr/sha$
[Thu Sep 26 10:35:24 2013] [error] [client 31.4.62.236] PHP Strict Standards: Non-static method Util::nonInputVar() should not be called statically in /usr/share/psa-horde/imp/lib/base.php on line $
[Thu Sep 26 10:35:24 2013] [error] [client 31.4.62.236] PHP Strict Standards: Non-static method Registry::singleton() should not be called statically in /usr/share/psa-horde/imp/lib/base.php on lin$
[Thu Sep 26 10:35:24 2013] [error] [client 31.4.62.236] PHP Strict Standards: Non-static method Horde::loadConfiguration() should not be called statically, assuming $this from incompatible context $
[Thu Sep 26 10:35:25 2013] [error] [client 188.119.227.22] PHP Strict Standards: Non-static method Browser::singleton() should not be called statically in /usr/share/psa-horde/lib/core.php on line $
[Thu Sep 26 10:35:25 2013] [error] [client 188.119.227.22] PHP Strict Standards: Non-static method String::lower() should not be called statically, assuming $this from incompatible context in /usr/$
[Thu Sep 26 10:35:25 2013] [error] [client 188.119.227.22] PHP Strict Standards: Non-static method String::lower() should not be called statically, assuming $this from incompatible context in /usr/$
[Thu Sep 26 10:35:25 2013] [error] [client 188.119.227.22] PHP Strict Standards: Non-static method Util::nonInputVar() should not be called statically in /usr/share/psa-horde/lib/base.php on line 3$
[Thu Sep 26 10:35:25 2013] [error] [client 188.119.227.22] PHP Strict Standards: Non-static method Registry::singleton() should not be called statically in /usr/share/psa-horde/lib/base.php on line$
[Thu Sep 26 10:35:25 2013] [error] [client 188.119.227.22] PHP Strict Standards: Non-static method Horde::loadConfiguration() should not be called statically, assuming $this from incompatible conte$
[Thu Sep 26 10:35:27 2013] [error] [client 31.4.62.236] PHP Strict Standards: Non-static method Browser::singleton() should not be called statically in /usr/share/psa-horde/lib/core.php on line 56,$
[Thu Sep 26 10:35:27 2013] [error] [client 31.4.62.236] PHP Strict Standards: Non-static method String::lower() should not be called statically, assuming $this from incompatible context in /usr/sha$
[Thu Sep 26 10:35:27 2013] [error] [client 31.4.62.236] PHP Strict Standards: Non-static method String::lower() should not be called statically, assuming $this from incompatible context in /usr/sha$
[Thu Sep 26 10:35:27 2013] [error] [client 31.4.62.236] PHP Strict Standards: Non-static method Util::nonInputVar() should not be called statically in /usr/share/psa-horde/imp/lib/base.php on line $
[Thu Sep 26 10:35:27 2013] [error] [client 31.4.62.236] PHP Strict Standards: Non-static method Registry::singleton() should not be called statically in /usr/share/psa-horde/imp/lib/base.php on lin$
[Thu Sep 26 10:35:27 2013] [error] [client 31.4.62.236] PHP Strict Standards: Non-static method Horde::loadConfiguration() should not be called statically, assuming $this from incompatible context $
[Thu Sep 26 10:35:29 2013] [error] [client 31.4.62.236] PHP Strict Standards: Non-static method Browser::singleton() should