Anyone having this problem?
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It always happen 5-10 seconds. what is the solution for this?

Im using wafflepool.
Happend to me also a few times, i would like to know too why if anyone can help? Using wafflepool only.
maybe an issue with WIFI.
Stratum from pool 0 requested work restartThis is not an issue. I believe you get this when new transactions (sending/receiving coins) are added to the potential block so we need to restart hashing from the beginning using the additional transactions.
Stratum connection to pool 0 interruptedThis could be a WIFI issue (don't use it unless you must), ISP issue or PoolWaffle working on the servers. Make sure you have a backup pool set. Don't worry about it unless it happens a lot.