upgrade to 9344 broke disk writing from newsbin

I have an application that has been running flawlessly in windows NT Pro guest on a macbook pro for several years.

After the upgrade to 9344 the application, Newsbin, a newsgroup downloader, is unable to write downloaded data to the disk. I see no errors in the applications logging nor in the mac system log. As far as the application goes it thinks it is writing but then realizes it got no data and keeps on trying over and over again.

this only happens to the external mac devices. It writes to the c drive which is a file within the parallels system fine. It does not write to the usb devices nor to the system disk on the mac.

If anyone has any ideas please pass them on.

thanks,

Mike