I'm using Open X and I'm really sick of it, not just the security, but I get bugs like I can't update ads because of missing plugins (it needs plugins just to run basic features). The support forums are ..well you can't even call it support.
Is DoubleClick basically the same thing? Does it have all the options like zones etc? Does it have a free version? Downsides? It's the first time I hear about this solution...
DFP is free. Google it for your heart content. I was like you and spent days/weeks to read and wrap my head about it but I'm able to do everything I used to do with openX.
One less thing to install on my server and to worry about updates/bugs.
You can create as many locations to serve ads on your site as you want and can combine/filter them.
I've used openX for years on client sites and never had any problem adding banners or updating..
I'll make sure to update all instances or openX that I have access to, do you have more info on the "bugs" or code that is being inserted?