I don't quite understand what needs to be done here.

Same here :(
vB 4.1.9

I am having to clear the cms cache each time a comment is posted for it to appear.

After going to 4.1.10 I can no longer make comments from the CMS page, has to be done from the thread or clicking go advanced.

The comment box is grayed out for some reason and I can't put in any text.

Works for me on 4.1.10. for the comments appear I'm just disabled the built-in vBulletin cache and now all comments or post appears instantly and got a decent forum performance.

SocketTF, any chance you could let us know how you managed to disable post cache, and do you know if there are any problems that this might cause for other forum operations?

Really really want to get this working and can't believe its not a standard function in VB4!

Sure, in your admin cp go to Options -> Server Optimization and configuration options -> then check "Yes" at the option near the end of the options group called "Deactivate Content Cache" (or something, I got my cp interface in spanish).

And yes, this must be a standard function in Vbulletin.

That worked, anyone know how to get this mod working without permanently disabling the post cache?

Is there anyway you can give the option when clicking on comments to have it link directly back to the forums post rather then the CMS article front?

This mod works for me without having to do the above on 4.1.10, yippe!!