Minecraft in-game statistics resets when starting minecraft 1.4. Lost stats I've collected for a long time, maybe since 1.0, and that's not fun.
For me, collecting stats is about 40% of the fun in Minecraft.
Having stats on a online database would be better?
Attached my stats file, it does not have any information from mods, such as custom blocks or items.
I assume you are referring to the loss of achievements and other info? If so this is a duplicate of MC-519