I purchased a Grohe Ladylux about 2 years ago and LOVE it. Except, after having been away a year, I returned home and noticed the faucet is slow to turn off. The house was lived in during the year, so it shouldn't be a lack of use issue.
Basically the faucet turns on normally, but when you turn it off it was to trickle off like a hose. Once it stops running it does not continue to drip. Is there a valve or something inside I need to replace, for the price of a Grohe, I wouldn't have expected this to happen so quickly!?

Plumbing - Grohe