spoke too soon, now Fireworks CS6 will start to launch until the splash says 'xxxs loading keyboard shortcuts' (xx meaning seconds to wait I assume), it it then hangs. Older version failed too .. so I am currently without fireworks ..and I have some projects arriving for which it would be REALLY hand to hav it working again.
all the other CS6 products seem to open ok ..
ps. actually running on Windows 7 Ultimate 64 just noticed