After initially working fine (Raspbian Wheezy), I am no longer able to boot my Pi from the 4GB micro SDHC included in the development pack. The problem started only after I removed the 4GB SD, and replaced it with a different SD that had been loaded with RaspBMC.
When I put the original 4GB SD back in the Pi and expected it to boot up again in Wheezy, I got the dreaded message telling me that there was a VFS failure in 179,2, etc.
I was able to reload Wheezy into the 4GB SD using a Linux laptop and the Adafruit micro SD USB adapter. But I continued to get the same boot failure message with the refreshed image.
After a few more tries, the SD card became bricked completely. It is recognized by neither Linux nor by Windows.
Anyone else having similar problems with this 4GB micro SD in their newer Pi (mine is from the batch shipped out from Adafruit around Christmas 2012)?
PS - Pi was always powered down while making SD card changes.