Siemens PLM just released MP2 for Solid Edge ST2 on Friday January 8th. This patch includes many updates as well as fixes for user reported issues. It can be found here (webkey acct needed): http://ftp.ugs.com/solid_edge/ST2/
For those unfamiliar with what Maintenance Patches (MP) are, they are software updates that vendors of most applications deliver on a regular basis or "as needed" to resolve issues with the application or enhance the application. They are typically installed on top of a major version of an application, and are generally version specific.
In the case of Solid Edge ST2, you would need to run the MP for that particular version once ST2 has already been installed. MPs are typically "all inclusive" meaning that installing the latest MP includes the content of all earlier MPs (MP2 included MP1 updates as well as MP2 updates). If running Solid Edge along with Insight Server or Embedded Client, you will need to also install the same version of MP for these items as well (All must have MP2, not a mix of MP1 and MP2).
I hope you find this information usefull.