Product review (5 stars): My water tasted just fine and I did not experience any floating matter that ...
Appears to work as advertised.  It does not leak as some folks have suggested.  They should try installing it correctly next time.  The warning light resets properly when you hold the LIGHT and LOCK buttons.  It does not reset by installing the filter.  For the folks that thought this they should read their refrigerator operations manual.  My water tasted just fine and I did not experience any floating matter that some folks said they experienced.  They should try hooking up to a reliable water source.  Water pressure is the same as before.  For those with trouble they should install the filter correctly.  As for how long it will keep working, that is still to be determined since it has only been 4 days since installation.