diff --git a/conf/intel/portage/package.env.amd64 b/conf/intel/portage/package.env.amd64
index 53dd4a01..2b70f3b7 100644
--- a/conf/intel/portage/package.env.amd64
+++ b/conf/intel/portage/package.env.amd64
@@ -15,6 +15,10 @@ sys-kernel/linux-server disable.debug+userpriv.conf
 sys-kernel/sabayon-sources disable.debug+userpriv.conf
 sys-kernel/ec2-sources disable.debug+userpriv.conf
 
+# avoid collision with mail-client/thunderbird
+# (/usr/lib/debug/.build-id/*), v. 2.30-r1
+www-client/seamonkey disable.debug.conf
+
 # micia: nvidia toolkit packages require GCC 4.4 
 # as of 05/jan/2012 disable graphite on it
 dev-util/nvidia-cuda-sdk nographite.amd64.conf
diff --git a/conf/intel/portage/package.env.x86 b/conf/intel/portage/package.env.x86
index fd1d201b..a5d16157 100644
--- a/conf/intel/portage/package.env.x86
+++ b/conf/intel/portage/package.env.x86
@@ -17,6 +17,10 @@ sys-kernel/linux-server disable.debug+userpriv.conf
 sys-kernel/sabayon-sources disable.debug+userpriv.conf
 sys-kernel/ec2-sources disable.debug+userpriv.conf
 
+# avoid collision with mail-client/thunderbird
+# (/usr/lib/debug/.build-id/*), v. 2.30-r1
+www-client/seamonkey disable.debug.conf
+
 # micia: nvidia toolkit packages require GCC 4.4
 # as of 05/jan/2012 disable graphite on it
 dev-util/nvidia-cuda-sdk nographite.x86.conf