This is SO weird

I run two sites, and love wordpress so much that it is my content manager for both. One is for the school where I work (auaweb.com). The other is for me (jimblog.net). They are both hosted at powweb, both under my name. Virtually everything about the two are identical.

The only difference is that for jimblog.net, I installed wordpress manually; for auaweb.com, I used their “instant installer” (auto) option. But since then, both versions of wordpress have been brought up to 2.0.4.

Recently I found the Andreas theme, and fell in love, so much that I put it on both blogs. That’s when I noticed it. auaweb.com’s plugins all work flawlessly; at least a few of jimblog.net’s plugins will not work at all, or at least not correctly.

The first one I noticed was a plugin called Admin Menu by semiologic. On auaweb.com, it’s perfect; on jimblog, the menu is there, but without any css formatting, and it looks terrible. But it sort of works, I guess.

The second one is a plugin called WP Tiger Admin by orderedlist.com. It’s an awesome plugin which works perfectly on auaweb, but not at all on jimblog.

There are other troubles I’ve had with jimblog which I suspect may be solved, if I can solve this problem.

But after searching for solutions for some hours now, both at powweb’s forums and admin pages, and at ww.wp.xz.cn’s forums and documentation, and just plain googling the web for it, I’m stumped.

Help!
Let me know what info, if any, I should post here to assist troubleshooting friends. I don’t even know what would be helpful…

Thanks in advance,
Jim