Hi guys, I have a really strange question about my wireless.
I am connecting from this Ubuntu 9.10 computer to a WRT54G running dd-wrt, over WPA2 AES.
Normally, everything works fine and I get very satisfactory download speeds; usually 1.5+ Mbps
Sometimes though, usually after restarting networking a lot, ie /etc/init.d/networking restart, the download speed seems to be limited to around 64-70 kbps.
It also happened recently when I disconnected from a vpn with vpnc.

It's really strange because it has nothing to do with changing any settings.
The only things I can think of are POSSIBLY wpa_supplicant causing problems because that's the only thing besides networking that's restarted.
It COULD be related to my router config but I can't imagine what because it runs so fast normally. Rebooting the router doesn't fix it.

Restarting the network, manually killing wpa_supplicant, rebooting the router. None of these seem to fix it.
The only way I've found is to just reboot. Obviously, something breaks at some point that isn't affected again by anything but a reboot.

I'm really clueless here, thanks

AES is pretty heavy encription, so maybe that is making troubles.

Well like I said, it works completely fine most of the time with AES.
AES is a very common algorithm used by millions of people without issue.