Hmm, I lose production when the AI change something expensive (like a bomber) to something cheap, which is then built straight away (like a 75mm gun). It won't matter much now, since the next turns will most likely include further conquests by russians or allies. The panthers are a good thing, unfortunately I don't think I'll have the time to take proper advantage of it. They still gotta be researched first, so they'll be ready far too late.
I got the feeling both yours and koby's ressources aren't stretched to the limit, like mine, so you'll be able to build up much more heavily even if I do get the chance to build a few panthers. My economy isn't good enough for both science AND rushbuilding units, and the AI doesn't make it any better by changing those units rushbuilt to something useless.
What kind of connection are you on, Kevin? -I know it may be troublesome to host a game behind a firewall.. we had some similar problems some time ago, but managed to get around it. Of course, if you're on a slow connection, it'll be too troublesome to play a mp session.