by Tomas De Amos.
Hi Ken, Visvanath.
Many thanks for your suggestions.
Ken, I have installed MySQLtuner and I received many suggestions after running it. Will try to contact a DBA in order to implement them.
Visvanath, I have recorded the network activity and found that the delay seems to be in modedit.php. I will try to investigate further and come back with my findings.
Regards.
Tomas.