I mine over 70 hours and I found 10 blocks (all immature...). Today all was changed to orphan and was delete from my wallet... It's really not nice and completly demotivated...can you explain?
Sounds like you were in wrong fork, really bad luck !
Just a quick fork check...this is what I get
getblockhash 53697
31ff8df8da4ca9d96a60b17585b0fda2a2f99758a551988f9f2aadecf0346652