I have been flatout unable to login to Drunk Duck anywhere while using Firefox (a problem as I often use Linux, which has no other browser). Whether on the frontpage, the forum page or the box you get when you fail your first login, I enter in my details and the page refreshes or changes with nothing happening.
I use Vista, and right now I'm using Internet Explorer in order to post this. As you can imagine, this is not ideal.

I am at a loss. I don't know why that would happen. Perhaps you have a plugin that blocks scripts or cookies?

When I installed script blocker on my main browser it ruined a lot of sites... I set it's protections very low as a consequence. It's not well made. :/

If it's not that, I'm not sure how to help you. Try deleting all your current cookies? Not ideal, but worth a try.

I'm trying again from college. Windows XP and Firefox v2.0.0.11 and the exact same problem: I can't log in.
Yet again, I try from Internet Explorer (v6 this time) and I can log in fine.
My house and college may be in the same country (Ireland) but we're miles apart, the computers use different operating systems, yet same problem.

Try actually clicking the login button instead of just pressing enter. I have this trouble with firefox and DD and it drives me nuts. Opera is fine with enter though.

Uuggghhhh so THAT's what the problem was.
Thanks KillerSteak, that got me logged in alright. I can't believe a site like this has such a fundamental webpage problem. That thing kept me off the site for weeks. I wonder how many others it's keeping off the site.

Yeah, that's annoying.
It's also annoying when I type my password in, and it decides to add more text at the beginning.
I just start typing **
Then it suddenly goes **********

(-.-)

I don't know if it helps, but I've had a similar problem with the most recent version of Firefox running on OSX 10.2.9, but not 10.4.9 (i've successfully logged in with FF on two 10.4.9 computers). My friend also has a problem logging in, but I don't know what browser/OS he's using.... I'll have to find out.

i found that to login in to Drunk Duck you can't click enter button on your keyboard to login instead try clicking the login button on the web page.

Yeah! WTF? I can't login on any server or computer! so I'm using another account to write this! Seriously, it's fucking maddening! I haven't been banned and I haven't typed something in wrong,soooooo, what the hell!?

No, you're not banned. Try deleting your cookies? I don't know if tat will work but it's something to try.

I never use Firefox on DD as I seem to get logged out every five minutes (or less). Also, the issue with using the enter button has been around since they changed the site. A little annoying but easily solved by just sclicking instead.