Acceess file in emulator and in device

[marcind]

hello,
i'm facing problem during writing to file.
everything work well in emulator:
...
fOut = mContext.openFileOutput(fileName, MODE_APPEND);
oSw = new OutputStreamWriter(fOut);
oSw.append(...);
...
file is created in: /data/data/marcind.Package/files/

but when i ported application on Motorola Milestone (2.0.0) file is not created (anywhere), there is no exception, nothing.

any idea whats wrong?

regards & thx 4 help.