How far away is your house from the supply authority tranny? Maybe if your near the end of the line and all the neighbors have cranked up the A/C units you might be getting a low voltage supply? Just a thought.

Cheers
Dave

If you have ever seen the floor in Pauls garage under his pins - you would realise that it is HE that would be stealing ALL the power from all the townhouses in his complex 

Hey I recall last summer playing my Flintstones on a VERY hot day and the same thing happened - was fine every other day but....not sure how common this is