For some reason after about 4000 shares in total and ~200+ rejects I get this sort of wave of rejects (hash-stale) which goes almost for 500+ rejects straight in a row or sometimes even the whole process of searching shares just freezes and nothing going on for a pretty long time! When this happens, the only thing that helps is closing cgminer .bat and reopening it again then I get accepts again... Any idea what it could be ? Is pool going to switch to stratum any time soon ?

P.S. and holy I found a block right after 10-20 minutes of my 1st mining on a pool

PP.S. 10:36pm -8 PST... the whole pool went down.