Hey,
I'm getting this error since yesterday, when trying to apply the newest
available updates (with apt-get):

The following packages will be upgraded:
  ros-hydro-opencv2
1 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
60 not fully installed or removed.
Need to get 0 B/8,780 kB of archives.
After this operation, 17.0 MB disk space will be freed.
Do you want to continue [Y/n]? Y
(Reading database ... 861462 files and directories currently installed.)
Preparing to replace ros-hydro-opencv2 2.4.4-1precise-20130706-0132-+0000
(using .../ros-hydro-opencv2_2.4.6-0precise-20130716-0022-+0000_amd64.deb)
...
Unpacking replacement ros-hydro-opencv2 ...
dpkg: error processing
/var/cache/apt/archives/ros-hydro-opencv2_2.4.6-0precise-20130716-0022-+0000_amd64.deb
(--unpack):
 trying to overwrite '/opt/ros/groovy/bin/opencv_performance', which is
also in package ros-groovy-opencv2 2.4.6-0precise-20130716-0040-+0000
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Errors were encountered while processing:
 /var/cache/apt/archives/ros-hydro-opencv2_2.4.6-0precise-20130716-0022-+0000_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

Is that overwrite of Groovy files suppose to happen?

Cheers,
Marcus