Here is the 2010 Comparison Matrix between AutoCAD and LT that I found on the Autodesk website
You can see the list here 
4 Comments To "AutoCAD vs. AutoCAD LT – What is the difference?"
#1 Comment By Phil Gamache On 2010/02/15 @ 11:17 AM
I use AutoCAD 2010 LT and am always thinking of upgrading but I did notice something on the list. I do get notifications of changes to a external reference. If a Ext. Ref. changes and the changes are saved, then the host drawing will have a balloon pop up notifying me of the change.
Just something I noticed.
#2 Comment By GBAT On 2010/09/22 @ 6:30 AM
We’ve gotten this question a ton at Managed Design (we’re a reseller). If you don’t need any of the following four features, LT might be right for you:
– 3D Capabilities
– Network Licensing
– 3rd Party Add-Ons
– LISP Programming
AutoCAD LT won’t do these things, so if you need them, you may want to consider the full package. Full details here:
#3 Comment By Luke Hunma On 2011/05/12 @ 6:36 AM
I am going to be using SMART Scaffolder, a program for scaffolding design. I need to use AutoCAD aswell to import drawings, however i am having difficulty understanding whether i will need the full version or just LT. Will LT allow me to design scaffolding?
#4 Comment By Fatima Dutra On 2012/04/02 @ 7:40 AM
I am architect, and I would like know if I can put that Autocad LT in Netbook 32gb?