SRU is Stable Release Update. Once a version of Ubuntu is released, we virtually never put a new version into it. So to fix Hardy, we'd need a minimally invasive patch to fix this issue that could be added to the current Hardy version. If someone can come up with the patch, there are a number of developers that could package the fix to get it into Hardy.
Responding to Gaël:
SRU is Stable Release Update. Once a version of Ubuntu is released, we virtually never put a new version into it. So to fix Hardy, we'd need a minimally invasive patch to fix this issue that could be added to the current Hardy version. If someone can come up with the patch, there are a number of developers that could package the fix to get it into Hardy.