Hi Terk,
On the 24h hashrate chart there's a jump from 2014-04-10 6 to 2014-04-10 11.
Where did those 5 hours go to?
You must be referring to an individual user hashrate.
It means that you wasn't mining in that time at CleverMining. Your miners probably switched to some other pool or hung up, so please check your backup pools stats.