Office 2010 Service Pack 1 has been released
There are fixes aplenty for Excel in Office 2010 Service Pack 1. You can download the patch from https://support.microsoft.com/kb/2460049. On this page you can choose to download the 32 or 64-bit version. This is dependent on the bit version of Office that you have, not the operating system bit version. Of course Microsoft recommends that you install the patch as soon as possible.