[akanevsky]

That has already came up before. Please read through the thread to see the answer to that issue.

Edit: Because I am in a good, here is the summary of my answer: my hacks are written with the existence of other hacks in mind, therefore my hacks do not contain "monopoly" that can disrupt other hacks' work. Other hacks, however, can be written in a poor fashion that can result in a conflic between itself and any one of my hacks. This, as you may understand, is not in my power to prevent.

...

Concerning the uncached template, that is, of course, important, but not important enough to release a new version just for that.

To fix that problem before there is a release, add the following plugin @ global_start:

$globaltemplates[] = 'adv_editform';

Any chance you could add an option for Administrators to remove the "Last edited by" notation from a post if it happens to have one?

Yes, I'll look into that.

Can you code this for 3.5.2

No, because this ALREADY IS for any 3.5.x version of vBulletin.