I dual boot between Windows 7 and Ubuntu 11.10 64bit. Yesterday, I was using Ubuntu and decided to move some video files from the Windows partition to an external drive (the external drive is also NTFS formatted). I've done some file moving before (perhaps not quite so large files) and not had any problems. All seemed to go well at least initially. Files appeared to have copied across and were accessible from within Ubuntu.
However later on, I logged out of Ubuntu (cleanly) and re-booted into Windows 7 and noticed the folder on the external drive I'd moved the files into had disappeared. None of the files were visible. Also Windows was slower (than usual!). I immediately shut down and re-booted into System Recovery Console and ran CHKDSK. Result - corrupted MFT on both the external drive and the main Windows drive. Luckily I was able to fix it, but it took many hours of scanning and a lot of head scratching.
In short my question is, is NTFS support in Ubuntu considered stable and reliable? Or should I treat it as "experimental" still? I'm very wary of using it following this incident, but what are your thoughts, and any idea why this happened this time?