Menubar goes transparent with compiz enabled

Binary package hint: compiz

After updating this morning and rebooting, my menu bar has turned transparent. It still functions (see attached images), and if I disable compiz, it returns to view.

$ sudo lshw -c DISPLAY
  *-display
       description: VGA compatible controller
       product: G72M [GeForce Go 7400]
       vendor: nVidia Corporation
       physical id: 0
       bus info: pci@0000:01:00.0
       version: a1
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list rom
       configuration: driver=nvidia latency=0
       resources: irq:16 memory:ed000000-edffffff memory:d0000000-dfffffff(prefetchable) memory:ee000000-eeffffff memory:ef000000-ef01ffff(prefetchable

apt-cache policy nvidia-glx-185
nvidia-glx-185:
  Installed: 185.18.36-0ubuntu2
  Candidate: 185.18.36-0ubuntu2
  Version table:
 *** 185.18.36-0ubuntu2 0
        500 http://archive.ubuntu.com karmic/restricted Packages
        100 /var/lib/dpkg/status

apt-cache policy compiz
compiz:
  Installed: 1:0.8.3+git20090914-0ubuntu1
  Candidate: 1:0.8.3+git20090914-0ubuntu1
  Version table:
 *** 1:0.8.3+git20090914-0ubuntu1 0
        500 http://archive.ubuntu.com karmic/main Packages
        100 /var/lib/dpkg/status