No doubt some users might have technical problems.
I have not encountered any problems in months. Neither with gambling nor with investing.
Happy customers are generally less likely to comment.
Regarding the cheating allegations. Post count 1. Seems legit. Why don't you post your PUBLIC satoshidice user page? (NOT the secret).
The provably fair system and js code is free for anyone to inspect. In order for us to cheat we would have to be able to predict the client roll that is generated by js code in the player's browser, or produce rolls that don't doesn't verify correctly according to
https://www.satoshidice.com/provably-fair/.
There also 3rd party verifiers like
https://dicesites.com/satoshidice/verifier.