It must be HORDE that is doing this. In my messages log, I see hundreds of entries from PHP like this:
Sep 4 14:30:44 finch httpd: PHP Strict Standards: Non-static method Horde::getDriverConfig() should not be called statically, assuming $this from incompatible context in /home/httpd/html/horde/lib/Horde/Perms/datatree.php on line 52
Sep 4 14:30:44 finch httpd: PHP Strict Standards: Non-static method DataTree::factory() should not be called statically, assuming $this from incompatible context in /home/httpd/html/horde/lib/Horde/DataTree.php on line 1395
Sep 4 14:30:44 finch httpd: PHP Strict Standards: Non-static method Horde::assertDriverConfig() should not be called statically, assuming $this from incompatible context in /home/httpd/html/horde/lib/Horde/DataTree/sql.php on line 1866
Sep 4 14:30:44 finch httpd: PHP Strict Standards: Non-static method DB::connect() should not be called statically, assuming $this from incompatible context in /home/httpd/html/horde/lib/Horde/DataTree/sql.php on line 1882
Sep 4 14:30:44 finch httpd: PHP Strict Standards: Non-static method DB::parseDSN() should not be called statically, assuming $this from incompatible context in /usr/share/pear/DB.php on line 520
Sep 4 14:30:44 finch httpd: PHP Strict Standards: Non-static method DB::isError() should not be called statically, assuming $this from incompatible context in /usr/share/pear/DB.php on line 551
Sep 4 14:30:44 finch httpd: PHP Strict Standards: Non-static method DB::isError() should not be called statically, assuming $this from incompatible context in /usr/share/pear/DB.php on line 551
Sep 4 14:30:44 finch httpd: PHP Strict Standards: Non-static method DB::isError() should not be called statically, assuming $this from incompatible context in /usr/share/pear/DB.php on line 557
Sep 4 14:30:44 finch httpd: PHP Strict Standards: Non-static method Horde_Cache::singleton() should not be called statically, assuming $this from incompatible context in /home/httpd/html/horde/lib/Horde/Perms/datatree.php on line 55
Sep 4 14:30:44 finch httpd: PHP Strict Standards: Non-static method Horde::getDriverConfig() should not be called statically, assuming $this from incompatible context in /home/httpd/html/horde/lib/Horde/Perms/datatree.php on line 56
What could possibly be going on? How do I fix it? Does it need fixing?