Read-only .ods in windows share

I have windows system sharing some folders (win server 2003).
In some thouse folders, .ods files are lock for editing (i can delete fail, change .xls and othere type of files, i can edit .ods in perent folder).
I got folowing message when i open the file: Document file ‘%filename%.ods’ i loked for editing by (windows hsare acccaunt name, htat i currently use) (date when file was created).

This may help