HTC :: Nexus One W-iFi Locking DLink Router?

Just got my Nexus One on Friday nigth, and am loving it so far. However, I have a curious problem..... It seems when I am home, and my Nexus is hooked onto the wifi, that when my phone goes to sleep (ie I don't use it, the screen blanks, etc) that at some point my router locks up.This means the phone can't connect on wifi, my computer which is hardwired in to the router doesn't work, and i can't even connect to the router itself via the admin page. I need to reboot the router to get the whole thing working again.

I've tried setting the router to autoscan the channel, to use only Wireless G.I also tried having the phone set up to maintain wireless all the time, but that still locked up the router.I've never had problems with our laptop, or with the sis in laws iPhone. so this is either a giant coincidence and my router is dying exactly when I get the phone, or something on the phone is causing the router to lock up.My router is probably 3 or 4 years old, a DLink WBR1310 but before I ran out and bought a new router, wanted to see if anyone else has been having the same issues?