According to results from the latest ChangeWave consumer survey, netbook demand is declining year-over-year while planned purchases of tablet computers - led by the iPad - are on the rise. The October survey of 3,108 consumers found that 14 percent of consumers planning to purchase a laptop over the next 90 days plan to buy a netbook, down from 20 percent in October 2009 and from a high of 24 percent in June 2009. Meanwhile, 26 percent of consumers…