Like Punchbowl, I'm still using 3.7.3, and i guess its gonna take me a while before i upgrade.
I don't know what it is, I don't think i'm worried about upgrading, its just that i'm happy with what i've got so far, until theres an improvement that justifies all the hassle of an upgrade, then i'll hang back for a while

In a few years time Ver.5.0.0 will be out so whats the rush