ALTERA DOES NOT WARRANT THAT THE FUNCTIONS CONTAINED IN THIS PATCH 
WILL MEET YOUR REQUIREMENTS, OR THAT THE OPERATION OF THIS PATCH 
WILL BE UNINTERRUPTED OR ERROR-FREE. 

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quartus-10.1-0.57-readme.txt 
Readme file for Quartus II 10.1 Patch 0.57
Copyright (C) Altera Corporation 2011 All right reserved. 
Patch created on February 17 2011
Patch SPR#: 367226 
SPRs fixed: 
//**************************************************************** 

Problem: When using 64-bit Quartus, ALTLVDS_RX MegaWizard input clock frequency shows only 100MHz


Solution: Install this patch


Caution - You must either have previously installed the 
          Quartus II 10.1 software or must 
          install the Quartus II 10.1 software 
          before installing this patch. Otherwise, the patch will 
          not be installed correctly and the Quartus II 
          software will not run properly.