Server :: Takes Time To Release File Handles - Get Corrupted - Deleted Too

The app in linux server(CentOS 5.3) uses files from a mount directory(Shared windows directory in read only mode). At the same time, the same file might be edited by user in windows env. We were assuming that as the windows folders are mounted in read-only mode in linux so any change done by user in windows environment would be fail safe i.e. can be safely committed to the file. But when the file concurrently used both by Linux and as well by windows, at some point linux does not release the file handles and the files get corrupted(deleted too). Earlier we were using win2k server and this step was hardly reproducible and win2k was releasing file handles quickly. But with centos, we really had touch time managing files.