O.K. After A bit of experimenting I've fixed it. Time from boot to login screen now 22 secs
I had two printers installed/connected. Both working fine (apparently).
When I switched of both printers before booting I got a fast bootup. Switching on the Laserjet 1018 after login gave no error messages but switching on the Deskjet f4280 gave error messages.
I deleted the Deskjet installation, switched it off, switched it back on and re-installed using PCC (I think I installed it using CUPS last time). Re-booted and all was fine.
Still don't know what was going on but happy now