It was on. Then it was off. Now it appears to be back on again. The online daily deal shopping leader, looks like it is will to gamble on timing of the Groupon IPO somewhere in late October or early November. With an expected valuation over $25 Billion, perhpas as high as $30 Billion, the company is betting that potential investors will discount many of the troubles or warning signs that have plagued the company in recent months and will gamble the the troubled economy won’t hinder a successful IPO.