Odd Wifi VS Bluetooth issue

So, I use my Playbook to read Web comics. Currently I am reading the excellent Girls With Slingshots at work and I've started having trouble loading pages.

Thought it was the server until I tried something: Turned off Wifi, and bridged the Playbook to my Z10 via Bluetooth. Suddenly everything is working fine, even though the Z10 is connected to the same Wifi network that was giving me troubles.

Un-bridging and reconnecting to the Wifi network brings back the loading issue.

So I'm wondering: could my Playbook's Wifi be damaged or something? Does this make any sense?

"In vino veritas, in aqua sanitas."

Total speculation: Could it be the site detects the pb on wifi as a mobile (or limited device) whereas the z10 is detected differently? I have no idea what "signals" are sent to web site?