1.- When I close a translated segment both new opened segments jump to the top of the window and the source segment is placed out of the top of the window forcing me to scroll up to be able to view the source text.
Yes, very annoying. In the later versions of Wordfast it also happens, but usually only in large tables with very large cells. I can't tell you how to fix it, sorry. Does it happen with all documents or only with some of them.
2.- After a while translating normally, the icons can't be activated with 1 click of the mouse. I have to click two times with the mouse on each icon. In the same line, when it opens a new segment, I can't start writting inmediately in the target text, either I have to enter the first letter of my target text twice to start writting, or I have to click the target segment with the mouse before starting to write or my target text apears without the first letter.
This rings a bell. There is a PB option in the newer versions of Wordfast for it... I'm not sure if the option exists in the older versions. The Wordfast group at Yahoogroups may be able to tell you what exactly you can do about it.
I can't help with the Babylon problem, sorry.
We should start a support group for people using good old 3.35x.