CR/LF (Hex 0D0A) converted in CR/CR/LF (Hex 0D0D0A)

Hi ABAP gurus!

I've a strange effect when writing a string (loaded in a BSP application as xstring) to the application server (OPEN DATASET in binary mode for output, TRANSFER mytext TO DATASET):

All <b>line breaks</b> of the windows text file mytext (CR/LF (Hex 0D0A)), which are correct when watching in debugger, arrive as CR/CR/LF (Hex 0D0D0A) at the server file.

Any hint what's the reason for that?

I'm not completely sure, but I think that it worked correctly last week. Can this happen due to server settings?

Thanks for your answers,

kind regards,