[peterska2]

Well, would you believe it? I only had the same problem myself last night and looked high up and low down for the answer before evenually figuring it out.

So here's the solution

In your postbit_legacy template replace ALL instances of alt1 and alt2 with

<if condition="$post[postid]%2">alt1<else />alt2</if>

Switch the alt1 and alt2 around in that code if you wish them to go the otherway round. This goes in the order odd posts = alt1, even posts = alt2.