[otrs] Attachment in Mozilla

Hello, when I am try to save attachments from my mails out of otrs, the files are one sign longer, and in hexedit I can see that a 0A is appended to the files. This prevends e.g gunzip to open these files. As browser I am using mozilla 1.0.0 on a SuSE machine. Maybe someone can fix this bug? Thanks Christoph