3rd party apps crashing

I've just got my iPhone less then a week ago and have downloaded 12 applications from iTunes. Here is programs that crash almost constantly:

-Labyrinth (the one that cost money)
-ShoZu
-iLighter

Other programs I have that work almost always are:

-eBay
-1Password
-Facebook
-MySpace
-SmugMug
-Remote (itunes)
-MyNetDiary
-AirSharing
-ShoppngList

I have the 2.1 update and it's not jailbroken phone.

and...?