I just had to answer a similar question in email. The answer should be just as pertinent here
The current release of NASLite+ is v1.4, which means that there were 5 total releases since it’s initial introduction in early January. That said, there should never be a reason for us to release more than 5 upgrades in a given 6-month period.
Initially, our policy was unlimited downloads for the given period, however we soon found that people were purchasing a copy and then handing the link over to the whole family. In order to curb that practice, we elected to place the 5-download limit.
I hope you understand and respect our position. Thanks for your support.
The NASLite+ releases to date are as follows:
v1.0 - 01/07/05
v1.1 - 01/22/05
v1.2 - 08/02/05
v1.3 - 10/04/05
v1.4 - 10/12/05