FYI, the mandatory warranty period in EU is now 2 years (since 2005 I think).
3. Unless proved otherwise, any lack of conformity which becomes apparent within six months of delivery of the goods shall be presumed to have existed at the time of delivery unless this presumption is incompatible with the nature of the goods or the nature of the lack of conformity.
1. The seller shall be held liable under Article 3 where the lack of conformity becomes apparent within two years as from delivery of the goods. If, under national legislation, the rights laid down in Article 3(2) are subject to a limitation period, that period shall not expire within a period of two years from the time of delivery.