Why is my sig showing randomly?

[trains are bad]

Why is it that sometimes I make posts and my sig does not show? I even have threads where some posts do and some posts don't.

[HoppysMag]

new code, sig shows once per page

[SpecialBlend2786]

new code, sig shows once per page

thank god

[B.A.M.]

oh so thats whats happening i thought my comp screwed up

[maglover728]

Thanks for asking that question before I did. Was just about to infact.

[WickeDKlowN]

It's kind of a cool feature but I don't really get the point of it. It's not like it speeds up loading that much(trust me, I'm on dial-up so I would know).