I heard anecdotal evidence that Greeks were buying lots of properties in Hamburg but it could be that somebody was having me on I also feel that German people are getting concerned about inflation, and, thus, are herding into property, and, as you say, it might not be the wisest step in all cases. Firstly, Germany will not be spared from all the outfall from the PIIGs desaster, thus rents and tenants may and probably will become less reliable. Secondly, German property is likely to become a prime target of financial repression - I think they will simply raise taxes and all sorts of other legal hurdles (environmental legislation etc.) by a lot. We are seeing that already. Thirdly, you are "immobile", as the German term implies. Of course, a lot of these arguments may not apply if you looked for a property to live in but if you look towards renting out you better choose wisely and in a good location I think.
I wouldn't be very keen to sell any gold for a property at this point.