Few days ago xfce4.8 was released, this new release comes with many new features and improvements, Xfce users are now able to browse remote shares using a variety of protocols (SFTP, SMB, FTP and many more), panel application has been rewrittenthereby improving positioning, transparency, item and launcher management.
Find more about this release in this Link
If you want to test this new release in Ubuntu 10.10, there is a PPA available , simply open terminal and enter the following commands:
sudo add-apt-repository ppa:koshi/xfce-4.8
sudo apt-get update
sudo apt-get install xubuntu-desktop