I recently bought a Dell 500 m (centrino with built in wireless card)
I also installed a d link 900 AP+ behind my ISP CPE (a Zyxel Prestige 643 router).
Sometimes my wireless connection works great. Others the connection is establishes (eg I can cross-ping computers) but access to the internet from the laptop is very slow or just does not happen at all.
Any idea why this could be? running windows XP home.
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