WAN acceleration technology typically relies on data-deduplication as a significant part of accelerating data transfer. The 2007 DWG format is written to disk with a type of error-checking that has the side-effect of nearly every byte of the file changing during full-save, even if little was changed. WAN accelerators fail to deduplicate the 2007 DWG data and must transfer nearly all bytes in the 2007 DWG file. This results in a slow-down during full-save when working over a slow WAN.
This hotfix will make a small change in the way the 2007 format DWG files are written to disk such that WAN acceleration hardware will be better able to deduplicate the 2007 DWG data; this will provide some performance gains for SAVE operations when users are saving across a WAN acceleration environment. The resulting 2007 DWG file will be readable whether or not others have this hotfix, but to achieve the best performance everyone working on the same DWG should install this hotfix.
You can download the hotfix for 2007, 2008 or 2009 programs here....
2009
http://usa.autodesk.com/adsk/servlet/ps/dl/item?siteID=123112&id=11849251&linkID=9240618
2008
http://usa.autodesk.com/adsk/servlet/ps/dl/item?siteID=123112&id=11856815&linkID=9242019
2007
http://usa.autodesk.com/adsk/servlet/ps/dl/item?siteID=123112&id=11856704&linkID=9240618
