SUSE Linux Enterprise Server 10有没有使用时间限制？

SUSE Linux Enterprise Server 10 有没有使用时间限制啊？我在novell的网站上下载时，看到如下信息：
SUSE® Linux Enterprise 10 Evaluation version requires an Activation Code for access to product updates. The Activation Code is valid for 60 days, and does not include access to Novell Support services. Click the following button to receive your activation code. Make note of the code, then click the link under Download Media to return to the download site.

Get Activation Code
To purchase a regular activation code, which includes unlimited access to product updates and Novell Support services, see How to Buy.

点击“Get Activation Code ”后，打开的窗口中有如下信息：
Product Registration and AccessYou have registered the item(s) listed below. Please be sure to print this page for future reference. For your convenience, we have provided links next to your registered items below to help you start reaping the benefits of your purchase.

SUSE LINUX Enterprise Server 10 for X86 and for AMD64 & Intel EM64T/Itanium & IBM Power 60-Day Evaluation
Activation Code: 63444C2E24710C Go To Customer Center