FYI - The thread that you joined was from 2 years ago ! However, I can be a bit more specific in this reply, than I was in my previous reply to this thread.
The is NO LIMIT !!! And, I doubt that there will be "another shoe dropping".
Some people have claimed to have hundreds, and LMI has stated that there is no limit to the number of computers you can add that use the FREE software. Of course, this MAY change in the future, but anything that anyone offers is changable. I seriously doubt that this will be the case - I think LMI really does mean that FREE is FREE.
In answer to your second question, YES, you can have PRO on the computer that you remote into most, and the FREE version of all the others.
Now, you don't need to worry about that - and just enjoy the program !
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KGHalbe
(DISCLAIMER: I am NOT an employee of LMI, nor do I have any financial concern in LMI. I am strictly a HAPPY USER of LMI products. I am using PC version and XP SP2. Other systems or versions may act different than described above.)