Weird internet problem

I'm having a weird wi-fi problem with my iPod touch that only seems to happen on my home network. My laptop, also on Wifi, works fine. The iPod touch gets its own IP address from the router (DHCP) and access some sites fine. But others seem to hang, especially forums or webmail or anything requiring login.

The funny thing is it works perfectly on the network at my office.

Yesterday I did the jalbreak (I was having these problems before), and none of the new apps would work (mail, weather, maps, etc.). However, when I got to work, they worked beautifully.

Any ideas what could be wrong?

The only difference I can see at this point between the two networks is that my home network is secured with a password while the office one is separate from the network, really there for client use of the net, and is unsecured (although it does not broadcast a station ID).

 

That's rather what I expected, but I supposed it didn't hurt to ask. Thanks.