When I open any program for first time after boot, it loads VERY slowly (Doesn't matter how long after boot). For example, terminal takes 2-3 seconds, skype and firefox often take much longer. If I close it and open again, it loads in reasonable time (<1 second). I got Intel Core i5-2500K CPU @ 3.30GHz, so it shouldn't be hardware issue...
What is causing this?
Average read time: 115.5 MB/s (100 samples)
Average write time: 98.7 MB/s (100 samples)
Average access time: 11.79 msec (1000 samples)