The anti-virus programs that come with most laptops is utter shit. They take up more system resources than necessary, are ineffective, and require a yearly subscription.
Wipe what your computer comes with and install the free
Microsoft Security Essentials instead.
For my next laptop I'm probably going to look at the Asus Thin and Light series with the low-power processors. They have about 11 hours of battery life which would be really handy for me. I know it's not a priority for you, but you can take a look:
http://www.amazon.com/UL50VT-A1-Light-15-6-Inch-Black-Laptop/dp/B002P3KMPI/
That's the 15". I'm personally looking at a smaller one (they also have it in 14", 13", and 11") Sadly, I don't know what stores in Malta would carry it or what prices it would be at over there.