Actually what you are reading is from one pool, not from both. whichever one "pool 0" is in your settings is just reporting a change even if it's not the pool actively being mined on. I only figured this out (by accident) after having two machines side by side, one on a stable LTC pool with Clevermining as a fall over and the other on Clevermining with the LTC pool as it's backup. The network dif changes (in my case, from clevermining) were reporting instantly on both machines at the same time even though they were technically mining on different pools.
That's just not true. Pool 0 is not the same in my two configs and there is no other pool reporting anything. This from ~20 minutes ago:
0: Enabled Alive Quota 1 Prio 0: stratum+tcp://us.clevermining.com:3333 User:abcd
[2014-04-24 18:19:40] Network diff set to 588
[2014-04-24 18:19:40] Stratum from pool 0 detected new block
[2014-04-24 18:19:46] Network diff set to 693
[2014-04-24 18:19:46] Stratum from pool 0 detected new block
[2014-04-24 18:19:49] Network diff set to 897
[2014-04-24 18:19:49] Stratum from pool 0 detected new block
[2014-04-24 18:20:18] Network diff set to 912
[2014-04-24 18:20:18] Stratum from pool 0 detected new block
[2014-04-24 18:20:23] Network diff set to 1.01K
[2014-04-24 18:20:23] Stratum from pool 0 detected new block
[2014-04-24 18:20:28] Stratum from pool 0 requested work restart
[2014-04-24 18:21:06] Network diff set to 721
[2014-04-24 18:21:06] Stratum from pool 0 detected new block
[2014-04-24 18:21:14] Network diff set to 850
[2014-04-24 18:21:14] Stratum from pool 0 detected new block
[2014-04-24 18:21:16] Stratum from pool 0 requested work restart
[2014-04-24 18:21:53] Network diff set to 1.01K
[2014-04-24 18:21:53] Stratum from pool 0 detected new block
[2014-04-24 18:22:05] Network diff set to 1.05K
[2014-04-24 18:22:05] Stratum from pool 0 detected new block
[2014-04-24 18:23:31] Network diff set to 1.03K
0: Enabled Alive Quota 1 Prio 0: stratum+tcp://useast.wafflepool.com:3333 User:abcd
[2014-04-24 18:19:39] Network diff set to 588
[2014-04-24 18:19:39] Stratum from pool 0 detected new block
[2014-04-24 18:19:46] Network diff set to 693
[2014-04-24 18:19:46] Stratum from pool 0 detected new block
[2014-04-24 18:19:47] Network diff set to 897
[2014-04-24 18:19:47] Stratum from pool 0 detected new block
[2014-04-24 18:20:17] Network diff set to 912
[2014-04-24 18:20:17] Stratum from pool 0 detected new block
[2014-04-24 18:20:28] Network diff set to 1.01K
[2014-04-24 18:20:28] Stratum from pool 0 detected new block
[2014-04-24 18:20:28] Stratum from pool 0 requested work restart
[2014-04-24 18:21:05] Network diff set to 721
[2014-04-24 18:21:05] Stratum from pool 0 detected new block
[2014-04-24 18:21:14] Network diff set to 850
[2014-04-24 18:21:14] Stratum from pool 0 detected new block
[2014-04-24 18:21:16] Stratum from pool 0 requested work restart
[2014-04-24 18:21:53] Network diff set to 1.01K
[2014-04-24 18:21:53] Stratum from pool 0 detected new block
[2014-04-24 18:22:05] Network diff set to 1.05K
[2014-04-24 18:22:05] Stratum from pool 0 detected new block
[2014-04-24 18:23:28] Network diff set to 1.03K