+--- firefox-93.0/modules/libpref/init/all.js~ 2021-10-06 00:00:30.000000000 +0200
++++ firefox-93.0/modules/libpref/init/all.js 2021-10-06 09:47:55.616984455 +0200
+@@ -216,6 +216,11 @@
+ pref("security.crash_tracking.js_load_1.prevCrashes", 0);
+ pref("security.crash_tracking.js_load_1.maxCrashes", 0);
+
++// Lower from 4 to 2 due to extension problems on glibc 2.34
++// https://lists.pld-linux.org/mailman/pipermail/pld-devel-en/2021-October/026375.html
++// https://wiki.mozilla.org/Security/Sandbox#Content_Levels
++pref("security.sandbox.content.level", 2);
++
+ pref("general.useragent.compatMode.firefox", false);
+
+ pref("general.config.obscure_value", 13); // for MCD .cfg files