I'm using a Lenovo Thinkpad x121e with an AMD Fusion E450. I am using a 64-bit debian sid:
Linux (none) 3.4-0.slh.1-aptosid-amd64 #1 SMP PREEMPT Mon May 21 01:42:58 UTC 2012 x86_64 GNU/Linux
I recently switched from the proprietary ati fglrx graphics driver to the free "radeon" driver (version 1:6.14.4-4).
Since I switched drivers (previously everything was running smoothly), EESchema produces "frame rates" well below 1 Frame/second which makes it impossible to use.
This probably is no performance issue since Minecraft (3D computer game) runs smooth at highest graphics settings, and Firefox shows no issues rendering, either.