NW
We had a Jerrold STB for Analogue and for some channels being in the wrong order for a week after installation, the box was faultless for the 3 years we had it before we upgraded to NTL Digital Plus, as it was at the time.
Our very first Diamond Cable analogue Scientific Atlanta box never needed restarting, but then analogue was a different kettle of fish 
We had a Jerrold STB for Analogue and for some channels being in the wrong order for a week after installation, the box was faultless for the 3 years we had it before we upgraded to NTL Digital Plus, as it was at the time.