MultiZilla is not compatible with Mozilla Firefox or Netscape.
Extensions using document.loadOverlay() might break the Preference Manager (FIXED) Dynamically loading of overlays when new windows are
opened might result in empty pref panels in the Preference Manager (because of a
bug/limitation in SeaMonkey) but please note that we already found a work around
for this problem. This thanks to the reporters of
bug 17213
Cutemenus v1.9.1 compatibility issues See previous note
Tab Manager crashes Mac's Please don't use the Tab Manager until we fixed
bug 17589