I have a problem with Dreamweaver CS4 - I originally installed it on new HP PC running Win7 Pro and it worked fine, but now has become slow and "laggy". When I switch from another open program to DW, there is a 5 sec. delay before DW becomes active. I can perform a few tasks then the next thing I try to do, click a button, type, save, etc. will produce a 5-6 second delay. I have deleted the DW cache, I have enabled and disabled syncro, caching, checkin/out and none of that made a difference. I ran disk clean up on my machine and that seemed to provide some temporary relief, but not much. I am not connected to a network drive.