A new sequence index is now available on the FTP site
http://ftp.1000genomes.ebi.ac.uk/vol1/ftp/sequence_indices/20130305.sequence.index
The corresponding analysis.sequence.index that contains only >70bp long Illumina reads is
http://ftp.1000genomes.ebi.ac.uk/vol1/ftp/sequence_indices/20130305.analysis.sequence.index
You may find different stats files for this release in http://ftp.1000genomes.ebi.ac.uk/vol1/ftp/sequence_indices.