Hello there.

I first heard about bitcoins in october 09 and generated them for ~1 year before I changed OS and didn't restart generating. With the recent press coverage I remembered about bitcoins and I (luckily) still had my old OS partition intact. The question is: I have the client version 0.1.5. Is it safe to use this for transaction? Do I NEED to update? Can I update from such and old version?

Many thanks,
Mahay