T61p crash with 4965agn

[Zucharn]

I have a T61p with the intel 4965agn wireless card. The issue I'm having is that whenever I have high throughput with the card, the laptop either locks up completely, or for a few minutes.

If it comes back from the lockup, it's unable to see any wireless networks until a reboot, and it locks up if I try to access the card in device manager. I've tried using windows to manage the card, or lenovo's software and drivers, or the drivers straight from intel and their manager. With intel's wireless manager, when I try to use the diagnostic feature, it is unable to power up the card.

This problem has persisted through two reinstalls of windows, and also occurs in ubuntu 7.10 and 8.04.

The router I'm using is the D-Link DGL-4500.

Any help would be appreciated, thanks in advance.