First data associated with a task originating from one of a plurality of applications may be received via a communications network. A gas is contained within the gap between the substrates. The assigned traversal priorities of a subset of the pages of the set are modified to direct higher priority traversals, responsive to the maliciousness probabilities of the URLs corresponding to the pages of the subset. A program thread communication scheme for packet processing is also described. In some designs, the channel state information may include feedback elements associated with different subband granularity.