From DigiTimes:
Unexpectedly low Apple iPad price forces notebook vendors to re-evaluate their tablet PC strategies
"... The vendors originally planned to offer prices pegged at 20-30% lower than the Apple iPad, while they generally expected the device to cost as much as US$1,000. The US$499 entry-level price has caught vendors by surprise and means they will now need to adjust their price scales even lower to attract consumers, the sources pointed out.
However, starting a price war at below US$499 raises concerns that any profitably will be driven out of the nascent tablet PC market, before it even has a chance to take off...."
MSI is specifically mentioned.