I have an iPass account and ATT also.
I have never had any issues with roaming in the past..where companies such as Boingo are the primary Wifi provider.
But I have been thwarted twice by PCS at two different airports in a week with both accounts. It says nothing specific except "error encountered"...
Anyone else have this experience? I'll be @#%%#^$ if I'm going to pay $9.95 for a day just because they've thwarted my roaming partners.