Outdated ektachrome???

[P. J. Alling]

I'm trying to decide if it's even worth shooting this stuff.  I've got 
several rolls of 120 size Ektachrome dated 1999.  It's all e6 
professional and it's been kept refrigerated.  Anybody have any 
experience shooting film this old, what the age effects are, how much, 
(percentage since the initial speed ratings are all different) to 
compensate for lost sensitivity, that sort of thing.  Any suggestions 
would be appreciated.

--
When you're worried or in doubt, 
	Run in circles, (scream and shout).