Failed updating posts on wordpress when use linux, but succeed on windows

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http://unix.stackexchange.com – I'm using Wordpress for blogging. And I use Windows 7 accompanied with Linux Mint on my PC. Recently I find that I can't update my posts on Wordpress when using Linux Mint. However, when I switch to Windows 7, I can update my post again. And another issue is I can upload files through FileZilla or FireFTP to my server on Linux Mint with no error, but the files become zero bytes. However, the same problem DOES NOT occur on Windows 7. So, what's the real cause? Should any settings to be done on the Linux network? Addition I have Linux Mint and Windows 7 Pro on my PC, both not running in a virt (HowTos)