Wordpress 2.7.1

[OKButton]

I am having a problem with the new verssion of Wordpress running under ISPCP. If I brows to the WP site It will eventually give a error 500 if I send the request again before I get the error 500 the page will load. The same is true for all liks within the site if I select them twice they work but a single click will end in an error 500. Has anyone got any ideas? I have monitored the system and it isnt under any load and older vers of WP work fine.

Cheers OKButton