I've been dealing with this problem in a limited fashion for over a week, originally it was just texts from people in my own area code on Verizon Wireless. In the last few days it has proven to be a problem for all phones, which is a big problem considering I'm getting married this weekend and have so far discovered both my friend who's coordinating the day of, and the guy who I am getting sound equipment from, have both been trying to text me and thought I was ignoring them.
If you have Gmail push, configure Voice to forward a copy to Gmail.
I have tried, it isn't that google voice isn't delivering the text to my handset, it is that google voice no longer receives text messages at all as far as I can tell, in any form. They don't show up in my google voice inbox, they don't get forwarded to email, etc.