Thank you Kano for pointing that out. i could see my miners still working but didnt look to see where they were mining.
This is a total newbie question but ... what factors go into making a long 78 +hr block? Is it just down to pool size?
The pool size determines the average expected time to a block.
100% on the blocks page is an average expected block.
You can work it out if you are interested

First check the current network difficulty ND - the bitcoind getinfo command will tell you that
... hmm I guess it wouldn't hurt to add that on the web site somewhere later if I can find space since it already knows it.
That number on the top left "Shares: NNN (X%)" is using the network diff to display the X%
Using the pool hash rate HR in THs, the expected time to a block is:
ND / (HR * 10^12 / 2^32)
So for example at 1400TH/s and the current (new today) ND of 40300030327.89140320
40300030327.89140320 / (1400 * 10^12 / 2^32) ~= 123634s ~= 34hrs 20min
You can also get that on my pool hash rate page I made years ago
http://tradebtc.net/bitcalc.phpGuess I could add that onto the pool web site at some time.