How do I disable the plugin check at Firefox Version 18 or higher startup?

Question

This thread carries on from a discussion about How do I disable the plugin check at Firefox startup? As clearly Tylerdowner did not like my previous message and so would like me to obviously start a whole new thread to find out what’s going on.
https://support.mozilla.org/en-US/questions/938821
Tyler: I am still looking for support and so are the other 83 people who have this problem. Hence why I am here, not to have to start another thread, not to have a go at you or just to run around further to get a clear, straight forward answer. I am now back to running Version 12 (which, has not solved the problem), with up-to-date plugins which are all supported.
Don’t fob us off, PLEASE HELP. Unless I am very much mistaken, this is the place we are meant to find help, right? Not to be completely blown off because somebody says something you don’t like. Perhaps someone better suited to this will help. I’ll follow on from then with MY problem from Tyler’s final comment as it is highly relevant:
Tylerdowner: Rumor Control, if you are running Firefox 18 with up to date plugins, then you are having a different problem than this thread is about. This is for Firefox 3.6 users who have old plugins, not those with updated software.

Answer 1

I should also add this info for all to see clear as part of my question (can be seen in More system details too):
I liked that version, was the first ever FireFox browser I tried and because of it made it my number 1 browser. There have been a heck of a lot from 3.6 to 18 though I think we’d all agree. Progress can and often is messy, but worth it.
Which is fine except mine, a different version, up-to-date plugins – and I’ve still same problem as these guys. It’s exactly the same even for me who has updated: How do we get rid of the Plugin Check Screen every time we start FireFox? I know I am up-to-date – as it tells me every single time!
I agree everyone should be up-to-date with the software and this may very well be the case that solves a lot of people with lower versions – yet I can say I updated from version 12 to the latest 18, spent the time getting half a dozen different updates as it wanted (all of which are supported according to the link you provided) plugins and yet I am still having the same problem as users with 3.6 and older plugins! Went back to version 12.0 and I am getting the problem since installing version 18.
Therefore from the fact I’m still getting the popup every time telling me everything is updated and safe, which is lovely to know, still doesn’t change the fact it won’t go away! Not a major problem but it is getting tedious now every single time.
Like I say I am willing to wait and see if this gets fixed anyway which to be fair, FireFox seem to do a lot better than the competition. If it doesn’t though I’d still rather go back to an older version just to be rid of it! But not even that is now working to be gone of it! It’s gotten that ridiculous for me now too!
:)