spina45 - 1:03 am on Jun 11, 2007 (gmt 0)
In early 2007 I changed my urls to SEO url format (i.e. product-name.html) and 301'd previous url to new SEO url format. Toolbar was grey for two months then over the period of two weeks PR began to reappear. My new SEO urls were completely indexed within 2-3 months. Then about 1/3 went supplemental. The SEO urls were implemented to regain previous high rankings. Seems I've gone from -950 to -30, so it's better but still not as good as pre-August 2006.