A few guys I know with these say they crash a few times, sometimes wiping the memory.
I dont think an updated firmware exists yet, either. Shame because they look sweet.
yup ive heard they are pretty unstable, always crashing, and apparently SE had tested this and the X1 more thoroughly than usual because retailers are getting fed up of dealing with so many returns and repairs of SE phones
http://www.mobiletoday.co.uk/news.aspx?id=43454
iv had mine nearly a month and it hasnt crashed once, top phone.