and saving constantly,
Just some suggestions:
Use numbered backup methode manually (MyFile001, Myfile 002...) and save often the stages with increased number in filename for more security.
Never open/edit/save a file from a pendrive directly. Copy it to Hard drive before you open it.
Tibor Kovacs, Hungary; AOO4.1.1, LO4.2.8; LO4.3.5 and Portable versions on Win7x64Prof, WinXPprof.SP3x86