If you have iPhone 4, updating to iOS 4.2.6 or above will allow the WiFi Hotspot to be infrastructure based instead of ad-hoc based.
It also supports WPA2 security instead of the less secure WEP.
When you are done with PdaNet, turn the WiFi Hotspot off explicitly to be safe.
Please update the PdaNet Desktop client to 5.30 if you have updated iTunes to 10.5.
Please also update PdaNet to 5.30 from Cydia if you have updated the iPhone to iOS 5.
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