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If you're dealing with low PR sites (5 or lower in average) I would estimate at least 4 weeks, otherwise you could become very unhappy, symptoms could be high blood pressure (severe headache, blurred vision), headache, tremor, nervousness, or anxiety.
Let the sleepness nights and continuous visits to WW continue then
In the meantime, you can always get some more links, preferrably from locations that also send traffic, not only PR :) Just to make sure that Googlebot WILL see you eventually.
As read in another forum, it also might help to sacrifice a virgin...