Recently I have upgraded my kernel on FC3 from 2.6.9 to 2.6.10 (latest) and now I can't mount my ntfs partition anymore. I get back that ntfs is not supported by kernel. This is strange because I roll back with old kernel and it is working. Is there some change for ntfs module?
NTFS is not supported directly by Fedora kernels. So if you had it working for an earlier kernel, you must have downloaded and installed the driver for that kernel. Just do the same for the new kernel.
$ rpm -qa | grep -i ntfs
may give a clue as to the package you installed to get it working.
One such set of packages can be found at: http://linux-ntfs.sourceforge.net/rpm/index.html
Paul.