Do all you Corsa C ( I guess Meriva too ) owners know that the time delay on the intermittent wipe is changeable? Start the car and push the wiper stalk up until the wipers sweep once and let it go - don't click it to intermittent. Count to 3 and then click it to intermittent. It will now sweep every 3 seconds - do it again but count to 7 - it will now wipe every 7 seconds.