Why supertuxkart has lost all its memory

Hi guys
I've completed all the trials on my version 0.8 but I've just opened it up now to find I'm back at the beginning. Why has this happened, and how can I prevent it happening again? Or is there a quick fix to get my memory back?
I am having the same problem with my older version 0.73 - it wants me to do all the trials again.
Lloyd
I've completed all the trials on my version 0.8 but I've just opened it up now to find I'm back at the beginning. Why has this happened, and how can I prevent it happening again? Or is there a quick fix to get my memory back?
I am having the same problem with my older version 0.73 - it wants me to do all the trials again.
Lloyd