InDesign issue fixed why was it broken?

I just purchased the design package cs5 included Photoshop, illustrator, and indesign.

Photoshop and illustrator worked as they have in the past with no problems. This is the first time I have used InDesign and it did not work.

Most of the mouse clicks did not do anything etc. After reading the help forums, I changed to my default font size ( the 60 year old eyes liked the larger fonts), and fixed the problem.

Now why would one product need the fix while other products work? I have around 4 to 7 hours invested in finding that issue, with the frustration of the broken software.

I should add I started with Photoshop; CS2 when it was new, and I can hold my own, I can sell my work. I have 3 months with Illustrator and I am learning fast.

I am not a rank beginer as I go back to before Microsloth.

So I shall say it Adobe should not have this issue with InDesign.

If I sound frustrated sorry for that, but I do feel better for it.

Thank you