System Restore?
Just downgrading the programs that you updated. i.e. probably java/flash/web-browser maybe.

As far as my knowledge, there is no system restore like in windows.... But there r more reliable features in Linux. It offers the same services to take snapshots of pc when changes made & "Back in Time" apps for Linux is great tool to achieve the same enhancement using to use gui. This services incld rsync / dd for creating / applying restore snapshots and diff for monitoring system changes. Back in Time allows to backup all folders and restore any folders with write access in the event of a problem following a system change.