User-Agent:       Mozilla/5.0 (X11; Linux x86_64; rv:2.0.1) Gecko/20100101 Firefox/4.0.1

Experienced this bug on a i586 and a x86_64 system.

Can't mount NTFS-3G harddisk using the KDE-Mount widget. It reports:

Requested filesystem is neither well-known nor in /proc/filesystems nor in /etc/filesystems

Seems to be this bug:
http://forums.gentoo.org/viewtopic-t-876109.html?sid=9c3216b49f7351df1eb2c5e708656de0
http://forums.gentoo.org/viewtopic-t-875603.html
https://bugs.kde.org/show_bug.cgi?id=270689
http://projects.archlinux.org/svntogit/packages.git/tree/udisks/repos/extra-x86_64/fix_well_known_filesystems.patch

Mounting from bash by using "mount /dev/sdb1 /mnt/" works!!! It's just about that udisks stuff.
Didn't had this bug before a few days (9th May 2011). An update must have caused this (by yesterday I think).


This seems to be a workaround:
Add ntfs to /etc/filesystems




Sorry had no time for a better report :-) Hope this helps!
Thanks
colAflash

Reproducible: Always

Steps to Reproduce:
1.
2.
3.
Actual Results:  
Mount NTFS-3G drive.

Expected Results:  
Doesn't mounts...