I'm on 9.10_amd64. I used synaptic to select the packages needed for the nvidia driver version I wanted. When I click the Apply button I select the download only option. Once the files are downloaded, quit synaptic (clicking through the warning about unapplied changes) and then run the restricted hardware installer. It will find the files that were just downloaded and install the packages...
WORKAROUND:
I'm on 9.10_amd64. I used synaptic to select the packages needed for the nvidia driver version I wanted. When I click the Apply button I select the download only option. Once the files are downloaded, quit synaptic (clicking through the warning about unapplied changes) and then run the restricted hardware installer. It will find the files that were just downloaded and install the packages...