Ubuntu 9.04 / rEFIt / can't boot into Mac OS X

[discosucker]

Hi,

I'm running Mac OS X and Ubuntu 9.04 in dual-boot setup with rEFIt on Macbook (5.1).

Here's the problem:
After updating Mac OS X to 10.5.7 (combo update) ...

1) the rEFit menu is gone
2) I get Macintosh HD and Windows (sic!) when hitting "alt" on start up
3) can boot into ubuntu and even browse the Macintosh HD from there
4) can't boot into Mac OS (blinking folder)

So the files are there, but there seems no way to get Mac OS X to boot.

Any ideas how I could get this fixed?

Thanks
Disco

[squeabs]

Try this: Resetting your Mac's PRAM and NVRAM

[jeroendiederen]

no, you have to reinstall rEFIt and run the partioning tool once in rEFIt. See this page
Installation of Ubuntu on a Mactel computer