Has anyone experienced after your PC is on for extended periods of time that you don't have any available memory left? Once my Windows 7 Ultimate x64 OS boots, memory usage is at about 32%, but after it runs through the day, memory usage jumps to more than 90%. no matter if I don't have any active programs. Once I hit that stage, I get the "insufficient resources when trying to open programs" error. It is probably related to some third party application having a memory leak. I've googled and found that it could be related with audiodg.exe which is a Creative driver process. Just for the record, I have 4GB of DDR2 RAM. I will try to track what's going on with process explorer, but if anyone experience similar problem, please post here.