iostat on machine w/slow reading package lists

techies@cmsltsp2:~$ iostat
Linux 3.13.0-35-generic (cmsltsp2) 	09/08/2014 	_i686_	(8 CPU)

avg-cpu:  %user   %nice %system %iowait  %steal   %idle
           0.20    0.00    0.12   12.56    0.00   87.13

Device:            tps    kB_read/s    kB_wrtn/s    kB_read    kB_wrtn
sda             241.14        52.80      1130.47     227510    4870819
sdb             240.15        17.98      1130.47      77460    4870819
md0             267.08        69.36      1129.83     298869    4868088
md1               0.17         0.55         0.12       2365        508