Heh! no, I didn't try that. It works, the only dependency errors are for postgresql but that's not installed anyway.
Unfortunately that didn't fix the initial problem being the age of the zend engine. I get this error with php accelerator when i try to start php.
the ionCube PHP Accelerator requires Zend Engine API version 20021010.
The Zend Engine API version 20010710 which is installed, is outdated.
I have done a bit of searching and came to the conclusion that i needed to upgrade php to upgrade the zend engine. Obviously not!

Thanks for your help Dan, I'll keep searching. I have read of others in this forum that did install phpacc without a hitch. hmmm!
cheers,
Brendon