Signature is not used

[Philipp v.Thunen]

Hello,

at first: Sorry for my bad English ;o)
My problem is that if I set up a signature for a e-mail or usenet 
account, the filename is not saved. I mean, I can choose a file and the 
filename is displayed in this field, but if I press "OK" and then I go 
again to the "Mail/News Account Settings", my filename is away :o)
What can I do?

Thanks,
-Philipp