Would really appreciate if someone can help with this problem:
When I first open a Mathematica note book, say you do 1+2 and press Shift+Enter. As expected, I get "3" as the output.
Now suppose you want to 4+5. But after pressing shift-enter, the program just sits on it, without giving 9 as the answer.
Only way to get the output was to abort the evaluation, and to re-execute it.
This happens for any other calculation (other than the very first one you run in the session). What this means that every calculation I have to do twice to get the output.
This has never happened to me in last 25 years of use, and I cannot seem to find the problem. Even uninstalled the program and reinstalled it and still doing the same thing.
By the way, I am running Mathematica version 9(64bit) on Windows 7 Professional (64bit)
Thank you so much for any help.