[TYPO3] Upload of multiple files impossible

[gentoouser]

Hello,

On my fresh installation (Debian etch, typo3 4.1.2; php4 and mysql5 are 
recent debian package) I see a strange problem with fileuploads.

Logged into the backend as an admin-user I am able to create and delete 
files and directories. But if I try to upload multiple files using the 
drop-down menu I get "Parameter Error Target was not a directory!"

Has anyone experienced this?

Thanks in advance

K. Werner