from ati-drivers-8.26.18-r1.ebuild currently in tree, the installed /etc/init.d/atieventsd file isn't able to start/stop the daemon correctly. Patch in next comment.
Created attachment 91064 [details, diff] patch against ati-drivers-8.26.18-r1 init.d atievenstd script in tree as of 20060706 - writes pid file - starts and stops correctly
*** This bug has been marked as a duplicate of 139458 ***