I got a Blackberry World by Sprint over a year ago. Never any problems. A few months ago, messages started deleting. Got a 2 GB memory card and problem was solved. Today, emails, text messages and call logs started disappearing again!! I do not have any music files or pictures. Only downloaded a few apps. Do not understand why this has happened. I just deleted internet cache and cookies.

Any ideas on why this is happening again?

thanks!