My L925 doensn't have a single problem with the Eduroam network either.
Are you sure that you filled in the right login data. Remember to fill in an email adress in the username field.
WPA2-ent
PEAP MS-CHAP v2
Proxy: off
You should not use the TTLS option but the EAP option.
With my Eduroam acount, I did not have to fill in a certificate.