I've been banging on for quite a while now that FF have been suffering the same decline in core support as FG as the generations shifted but that in their case it was covered up by the fact that they were considerably more adept at hoovering the significantly larger floating vote. In the aftermath of the 2009 budget that is what has changed and is now being reflected in the polls.
The ice shelf of floating voters has calved from the frozen continent of FF and is now in open water. Currently it is located solidly in the territorial waters of FG and the Independents. Whether it stays there is an open question but it is very definitely drifting away from FF who seem not to understand that it is even loose.
Just a quick bit of context but both George Bush and Nixon had at their lowest ebbs higher satisfaction ratings that this government currently has. And at 18% satisfaction barely half of the government parties own supporters are satisfied with their performance to date. That is pretty damning stuff.