HotRod said:

No one has seen a lightsaber really since Ep3

All those who saw the fight on the Death Star 1 - Dead

No one saw a lighsaber in ESB apart from Luke & Vader

All those who saw a Lighsaber in Jedi - Dead

Apart from our 'Heroes', no one in the galaxy has really seen a lighsaber in battle since the Jedi were in power....A long time ago!

Presumably the cleaning lady who found Luke's Lightsaber (Still attached to his severed hand) at the bottom of Bespin has seen a Lightsaber.

Plus Boba Fett probably told loads of people about Luke's sweet new Green Saber after he climbed out of the Sarlacc pit ;-)