Since upgrade to v3 I keep hitting nph verify problems. After a few checks it throws back "mysql server has gone away"

I understand potential reasons so made some changes to server msql settings but it still bombs out, is there a fix or can anyone tell me what they have set their database settings to be. This bit of the program simply doesn't work very well anymore and I would like to keep my links clean and of value.

Cheers
KevM