I know the diff changes depending on the hash rate and retargets ever 1024 blocks? somewhere around there.. my question is what happens .. like it is now the hash rate drops and its taking longer then the average 10 mins per block, will bitcoin qt retarget sooner seeing its taking longer to solve a block now that there is less hash rate.. at the time of this post is averaging 11 mins to solve . Are we going to have to wait longer then 2 weeks till the next 1024 blocks (ever how long that will be) for a retarget?
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quick answer: no it will go by network difficulty for the block it is trying to solve.
If the network lowers difficulty, then the software will 'retarget' the lower difficulty with the next block. average time is just that - an average. Some days blocks are found very quickly like within minutes or seconds of each other.
If you are meddling with the core software to try to solve at a targeted lower difficulty, the network itself will reject your block if it was discovered at a difficulty lower than current.