I only came to this forum to seek answers to my question. Instead all I got was a lame response from someone attempting to be humorous. If I wanted to have a laugh and joke. I would go to a comedy night down my local. But seeing as this is the forum for reporting problems. I did expect a more professional solution to my current problem than the one I got. But I guess someone has to be the village idiot.
I was using Opera_20.0.1387.64 but I un-installed it and installed Opera_19.0.1326.59 but still having the same issue. So I will try install an older version of Opera.
Also it's not just the arrow keys. I cannot delete cell data by using the delete or backspace keys. The tab button also doesn't work.