Recently I noted that when new articles are published on my blog, it doesn't get indexed on Google even after three hours. Earlier this was done within one hour.
Another interesting thing is that some folks have added my RSS feed to their twitter and friendfeeds, so when i search for the new article URL/exact title the friendfeed items are shown on Google not my site.
Tricky situation. What I think I can do here is do something to get my indexing/crawling frequency to one hour. may be by posting more articles frequently and increasing the frequency via GWT.
Not sure what to try (to get Google to come), but I have noted over the last two years that Google seems to be "slower" and less aggressive... perhaps running out of steam? Or have tweaked their algos so perfectly that they know just how frequently they need return and have that coded in their already over-extended bot activities... YMMV