Problem after pruning scores
 

After i upgraded to 2.61 and pruned all scores, all game scores are gone. Also best score of all the time, its allways empty. How can i turn off that part? its a game played hundreds of times but it writes no scores yet, its disturbing :( Also my online list is wrong, guests fixed to 8..:S

Does anybody know possible solutions for these problems?

If you prune the scores, all current highscores are gone (what else? ;))
The "personal best result" is calculated based on all scores stored in DB, so after pruning all scores there is nothing left to calculate. Storing each personal best result per game and per user could cause massive database-load (for example having 1000 games with 5000 users would be 5.000.000 !! personal best results in DB)