We just had a minor issue with SF 4.0.9 and Windows SeaFile Applet.
If you create a folder (using WebUI) and this folder contains a forward slash (e.g. Project A/B) and you try to sync it later locally, the folder structure will look like this:
c:\my_seafile_folder\Project A\B\
I guess the WebUI (or better the software on the server) should make sure, there are no forward- and/or backslash in the folder name, because it will confuse end user who like to sync things.
If you use the web interface to create a library that ends in a period, seadrive fails with an “Acess denied” error when the user tries to click on the library in Windows.
Periods in the middle are ok, but if the final character is a period, then it fails.