package iputils-ping 3:20100418-2ubuntu1 [modified: bin/ping] failed to install/upgrade: unable to make backup link of `./bin/ping' before installing new version: Operation not permitted

[philovivero]

Does this all the time ever since I upgraded.

ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: iputils-ping 3:20100418-2ubuntu1 [modified: bin/ping]
ProcVersionSignature: Ubuntu 2.6.38-11.48-generic-pae 2.6.38.8
Uname: Linux 2.6.38-11-generic-pae i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Tue Sep 6 22:54:32 2011
DpkgTerminalLog:
 Preparing to replace iputils-ping 3:20100418-2ubuntu1 (using .../iputils-ping_3%3a20100418-3ubuntu1_i386.deb) ...
 Unpacking replacement iputils-ping ...
 dpkg: error processing /var/cache/apt/archives/iputils-ping_3%3a20100418-3ubuntu1_i386.deb (--unpack):
  unable to make backup link of `./bin/ping' before installing new version: Operation not permitted
ErrorMessage: unable to make backup link of `./bin/ping' before installing new version: Operation not permitted
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
SourcePackage: iputils
Title: package iputils-ping 3:20100418-2ubuntu1 [modified: bin/ping] failed to install/upgrade: unable to make backup link of `./bin/ping' before installing new version: Operation not permitted
UpgradeStatus: Upgraded to natty on 2011-06-19 (79 days ago)