Yes, but on the support page, there's a link to 2g upgrade sticks that Toshiba will sell you, and two of the three are 667s, one 533.
To further confuse, one review on Newegg said he pulled out an 800 when upgrading the memory.
The reason I want to use the Corsair 667 is that it seems to be the cheapest on Newegg at the moment, and has free shipping.