I know that it sounds too much drastic but something very annoying happened to my new SSD disk.
I bough a Samsung SSD 830 drive for my macbook late-2008. I mounted the new disk with an external case and I formatted it with mac os filesystem. Unfortunaly, I could'n install Mac OS Lion due to a cryptic "an error occurred while preparing the installation". Then, probably I became the dumbest man on the world and I formatted again the disk in NTFS from my Mac in order to mount the disk on a Windows machine and trying to update the disk firmware or whatever. From that moment my disk is considered a read-only drive from all the OSs I tried (Mac OS X, Ubuntu, Windows 7, etc). I don't know what to do because I cannot format my disk again.
I would like to format again my external drive and I hope there is a possibility to do it (in a reasonable time).
UPDATE: I connected the disk to a Windows XP machine via internal SATA and I was able to 'erase' the disk from the Samsung software which told me that the disk was in a frozen state (!). Unfortunately, on the same machine the disk was considered a protected GPT disk and I couldn't format or partition it. Then I moved on a Windows 7 machine and I succeeded in formatting the disk in FAT partition.