Toggle btw compiz&metacity with fusion-icon in Ubuntu Hardy

Since gusty, compiz-fusion will start by default. I love eye candy but for resource shortage reason on my old box, sometime i need to switch to metacity. with alt-f2 and run 'metacity replace' is just work but not convenion. Thank for Tom that point me . Fusion-icon is use to switch between compiz and metacity window manager. For hardy, fusion-icon is in repos. installation is easy like

pnix@pnix-a7n:~$ sudo aptitude install fusion-icon
Reading package lists... Done
Building dependency tree
Reading state information... Done
Reading extended state information
Initializing package states... Done
Building tag database... Done
The following NEW packages will be installed:
0 packages upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 29.8kB of archives. After unpacking 270kB will be used.
Building tag database... Done

alt-F2 and type 'fusion-icon -n' or if you want this everytime logging in add 'fusion-icon -n' to 'Sessions preference' in System->Preferences->Sessions.