Originally Posted by Cornflake
Care to be more specific?
As you can see there are several aspects and it's not like every phone is suffering from the same thing.
WiFi is functional on the Sensation - but some combinations of users and/or phones and/or routers may have more unique problems.
Everything as topic starter said - endless loop:
At the same time, my iPhone, HTC Desire and laptop can connect to the router without any problems.