If can't confirm, just get a 4gb Transcend SDHC one lah. No much difference pricewise, at least it's a better name brand I think.
I'm using 2x 2GB one, quite good imo.
You can call Memory World and check out for pricing/availability: 6333 4500 (#04-12 SLS)
And the IT Show is just around the corner (8 to 11 March 2007)
Cheers!