Lights Flickering

[Jel]

Hi we changed a Consume unit about 8 months and the tenants have reported that all the lights in the property seem to flicker at the same time. They seem to think this started to happen when we changed CU, but i have been back made sure all connections are tight, and to check there is no dimmers etc.
Does anyone have any ideas, as the tenants think this is going to damage their computers?

 

[Goody]

Duplicate post of http://www.electriciansforums.net/electrical-forum-general-electrical-forum/44921-lights-flickering.html

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[Jel]

Sorry guys did not realise my thread went through earlier as i did it from my mobile, please ignore.