This affects me too, using Kubuntu 13.10 using both the 3.11.0-14-generic 
kernel on my Acer Aspire E1-572.  
There are times when I can stay connected for more than 20 minutes without 
problem but most of the times I am dropped from eduroam within 1 - 5 minutes.
Android smartphone is connecting stable to the network, so I'm gonna resort to 
using its wlan tethering feature.

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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to wpasupplicant in Ubuntu.
https://bugs.launchpad.net/bugs/429370

Title:
  Eduroam randomly disconnects

Status in “wpasupplicant” package in Ubuntu:
  Confirmed

Bug description:
  I connect to a Eduroam network with a certificate, user name and password 
over tunneled TLS, WPA & WPA 2. 
  After upgrading from 8.04 to 8.10, the network works for some time then 
disconnects. Numerous sudo ifdown -a and sudo ifup -a are needed to establish 
the connection again. 
  I have tried upgrading to 9.04, but disconnects still happen. Then I upgraded 
the kernel to v2.6.30.5. Still the disconnects were present. And with the 
standard procedure, the connection could be established again.
  Today I upgraded to 9.10, and the situation got worse. After boot the 
connection was established, but then it dropped and it won't establish again. 
After reboot, the connection works again.
  If you need any logs, please tell.

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