Control panel -> Language -> Form -> choose English
This has solved the problem.

Thank you very much for the information.
Now I can use Inkscape on Windows.

Thank you for your advice. I have tried the 0.48.4 installer. Unfortunately things does not change. At first it is fine. But after I change the tool and come back to the tool I was using, characters disappears. For example, use the star tool then switch to the circle tool and then back to the star t...

Thank you for your reply. This problem occurs on both my laptop, home and business computer. I downloaded a 7zip file and just extracted the file. There is no installation process involved. I have even tried a development version inkscape_r12199-201303140719 with no luck. I am wondering why everyone...

Hello. I have the invisible characters problem too. I want to put numbers in the input field. But the input field is sometimes empty like the image attached. Pressing the tiny triangle beside the input field seems to work though. My security Update KB2753842 is dated Dec 22. This must be the latest ...