While it hasn't entirely rebounded, the PC market took an optimistic turn during the second quarter, according to iSuppli. The research firm said that for the first time in six months, the market has achieved sequential growth in unit shipments.

Worldwide PC shipments in the second quarter totaled 67.2 million units -- down 4.3% from last year, but up 1% from the first quarter of 2009. HP had the highest sales, moving 13,420 units, Dell followed with 9,035 PCs shipped, Acer sold 8,206, Lenovo moved 5,645, and Toshiba took fifth at 3,312.

Matthew Wilkins, an iSuppli analyst, attributes the growth to strong notebook PC sales, which picked up the slack of a weak desktop performance. The firm predicts continued sequential growth in the third and fourth quarters, "driven by the slow improvement in the worldwide economy."

Other obvious factors that will affect sales include the launch of Windows 7, and the coming holiday season. Despite the minor increase, iSuppli is still forecasting a 4% decline in global PC shipments for 2009.