June 4, 2013.
Finally the repositories of the OpenFOAM-extend project are fully operational again.
The cause of the interuption of service there was that ANSYS objected to six files in the OpenFOAM 1.6-ext versions which they claim that they touch their intellectual property and shut down the repositories with a DMCA-notice (as a collateral damage a number of other projects was hurt). Until this matter is resolved the files are removed from the 1.6-ext (they are not essential) and all repositories carrying it.
For details see: this post on the message board