Currently, many people who use Google’s services, including web search, Gmail, Google Reader and other products are either down or incredibly slow for some Google users. For Danny and myself, we are able to access these services with no problem. However, if you look at recent Tweets about Google, you will notice that many people are having extreme difficulty for the past hour or so.
The Google Apps status page does confirm issues for some users. The question is, how many and for how long? It does seem fairly wide spread.
There are more people covering this at Techmeme.
Postscript: Here is the official post from Google on the issue that effected 14% of their users.