It has been a very long time since the release of SharePoint 2010 SP1, therefore, most organizations have had to resort to applying CUs (Cumulative Updates) to their SharePoint installations to get the latest and greatest hotfixes applied to their SharePoint environments.
Fortunately, SharePoint 2010 SP2 has been recently released, therefore, you can simply apply SP2 and avoid downloading all of the various Cumulative Updates one has had to download and apply individually in the past: http://www.microsoft.com/en-us/download/details.aspx?id=39672
If all goes well, SP2 will not introduce the same fiasco as SP1. With the release of SP1, a CU was immediately required to deploy on top of SP1 to ensure a fully functional SharePoint environment. If the CU was not applied, many aspects of your SharePoint installation would be completely broken!!
For a complete listing of available SharePoint 2010 SP2 updates, check out this link here: http://support.microsoft.com/kb/2687522