infuriating iChat problem

Hello!

I . . . was really hoping I could solve this problem by myself. Yet I cannot. So sad.

I assume someone out there will be able to help me in about three seconds, and make me feel kind of stupid. Here goes!

I'm using a Macbook Pro (C2D, bought last November), and I've never had any trouble using iChat for my Jabber services. Just yesterday, however, I installed a wireless router in my home. The internet works fine! The wireless router works fine!

However, iChat keeps disconnecting me.

In almost a year, this has never happened, so it's a little bit frustrating.

I thought, maybe there's an option to tell iChat to just log me back in automatically if I'm logged out . . . though I definitely cannot find this option.

Why is this happening? Is there some problem with the wireless that I can't see?

Thanks in advance.