There are lots of Pakis, who out of frustration with thier country are roaming around here in Rediff message boards, provoking south indians against north indians. I am a south indian myself and I see all indians including north indians as my brothers. I don't subscribe to the crappy Aryan Invasion theory by the british which was disproved archaelogically after the Harrappa-Mohenjadaro findings and recently was disproven Genetically (DNA analysis). North Indians and South Indians have the highest match against europeans and central asians.
Also the original Aryan Invasion theory talks of Aryans invading India in 1500 BC - but when Harrappan findings suggested that it dates atleast to 2500BC, the british historians quickly changed the aryan invasion dates to 3000BC. Its surprising how foolishly ppl believe that the "Aryans" described as "Nomads" and "Barbarians" by the british themselves can come to India and suddenly have a great civilization and write such a great thing as the Vedas. The recent Bhimbatka Cave findings in Chattisgarh proved that there is great civilization in India which is atleast 8000 yrs old (cave paintings suggest that they are from 6000 BC). Ppl like Karuna took the British's bait and thrived on anti-hindi - anti-aryan crap to only divide indians. The british also tried creating differences between tribals and rest of India - by calling them Adivasis/Natives and branding rest of India as oppressors/occupiers.