I'm one of the lucky people who've received their Raspberry Pi (see http://raspberrypi.org.uk).
I ordered it on the launch day 29th February and I received it about 10 days ago but I've not really had a chance to play with it until today.
Initially I tried creating the SD cards on Windows 7 (64 bit), but after fighting the Windows authority system I gave up and installed Ubuntu server as a VMWare virtual server which I used to create the card images.
My initial feelings are that it is very sensitive to power supply and usb port load. My old wired iMac keyboard works OK if it is the only thing connected but plug in the ethernet cable or a mouse and it starts doing wierd things and the network misbehaves as well. I solved this by plugging the keyboard and mouse into a powered hub and now everything seems to work as expected.
I think the Raspberry Pi doesn't like any of my SD Cards because they all seem to be only getting approximately 720kB/s (using dd on the stock debian distro with the updated firmware) but the same card used in my VMWare virtual Ubuntu server has a transfer rate of 4.5MB/s.
For my second experiment I'm going to try and have only the bootloader on the SDCard and the rest on a harddisk and see how that setup performs.
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