Title says it all.I have ubuntu 10.10 version and i want to upgrade to latest one.i start the update manager but it show me toupgrade to 11.04. and i want 12.04 or above. I am downloading ISO image of 13.04 version. and i will burn it. but is thier any way instead of fresh install i may upgrade the ubuntu from the cd. if i install it will lose my software and all the data. so plz siuggest me what should i do?Thanxs