Slow CD/DVD recognition problem.Help please

Today I updated my LG H55N firmware from 1.0 to 1.03.With 1.0 fw, it used to spin up&recognise my dvds around 21-22secs.But I updated 1.03 fw and now it takes around 35-36secs.Reads blank media around 16secs.I am using Verbatim MCC 03RG20.What is the problem?

Where can i download the first/main firmware of LG H55N ?

What burning softwares have you installed?

Is Alcohol one of them??