Safari does not let me save pages! Just tried Safari (got advised to save battery power over Chrome) and the "Save As" button is disabled!
Can't save a single page!

Any idea why this happens and what I can do against it?
Thanks!

EDIT. Safari version 6.1, MacOS 10.8.5
Ok, I found it - it does not let me save page until it is fully loaded! 
Which is painfully slow sometimes, comparing to Chrome.
As far as I can see, Chrome still lets me save page even if it is not complete and even when I just started loading it still works with previous page!
So I can still save the previous page after mistakenly clicking on a link.