Just looking at the graph, it looks like you start losing 5-6 BIs about every 2k-2.5k hands. You are due to lose soon if the trend holds. If you move up then hit the losing streak is it variance or normal? Big difference in $50-$60 in losses and $125-$150.
Like zorrito, I'm waiting til I get at least $700.

Does look like you're spanking 10NL.