Myspace and Facebook issues

Every time I try and get onto Myspace or Facebook i receive an error message 'Internet Explorer has stopped working' or 'Experienced a problem'.

Each time it checks for a solution, however one never arrives, it simply re-starts.

This only happens on these two sites, it allows me onto the homepage but no further than that.

I am using IE7 and Vista Home Premium x64.

Any ideas would be greatly appreciated.