I tried to upgrade using the dashboard core upgrade.
Server: Localhost via UNIX socket
Server type: Percona Server
Server version: 5.5.42-37.1 - Percona Server (GPL), Release 37.1, Revision 727
Protocol version: 10
Server charset: UTF-8 Unicode (utf8)
cpsrvd 11.44.3.5
Database client version: libmysql - 5.1.73
PHP extension: mysqli
phpMyAdmin
Version information: 4.3.8, latest stable version: 4.4.7
The PHP System Default Version is 5.4
Database Driver is mysql. I could try to change it to amysqli if you think that is the best step.
I don't see Apache.log or httpd.log are those in my HTTP file set or somewhere else?