I have a problem with my LMDE system that has me completely stumped. It . . . . . . pauses. It generally takes forever to launch a new program, even simple programs such as a Nautilus file manager window or terminal. Any new program/window will take anywhere from 30-60 seconds to launch, sometimes longer, even if there is nothing else running. Similar delays occur with text-entry screens, such as typing a Google search or Facebook login - I can start typing in the search box, but no text will show up for 30seconds or more. Closing windows - same thing. Click on the "x" and nothing happens for 30-60 seconds. This is starting from a clean reboot, no other programs running. System monitor shows minimal CPU and Memory usage while this annoying behaviour is occurring, which suggests that the problem is not from too much competing usage.
I'm running LMDE, using the "latest" repos, with a couple of apps installed from Debian Testing (Wheezy), trying to keep a stable desktop. My system is an AMD A8-3850 quad core 2.9Ghz system with 8Gb RAM, so this problem has nothing to do with system power or resources. I'm thinking it *might* have to do with the graphics drivers, but they have worked just fine for the past couple of months and haven't been updated, so doubtful about that too.
What could cause these strange "pauses" or "lags" in usability??