New version released!

I successfully reproduces the stucking problem on edit, and it seems to relate to memory issues.
The new version improved memory handling, so I hope you will see this problem less frquently, or it'll go away completely.
Please report here if the problem persist, and include the following data:

1. number of notebooks
2. number of notes in notebook which has problem

Thanks for cooperation

PS: Alternatively you can use "Contact me" button in "About" menu to directly send email to me