It isn't :D

Mine neither, although I had to change the timeline once back in 1403, because those Visi-goths weren't listening to my devine orders, I made their realm go 'boom'........
...
You weren't supposed...

Heh, as long as it doesn't become bigger when zipped than normal, it's ok :).

Does it still occur when you create a new scene and create an emitter iwht the same properties as the one you had before? If so, try just setting all settings to 0 ( except particles count :p ), and...