Why is L4 using so much CPU when opening resources? I opened L4 empty. Opened the highlighter. Then opened the ESV. CPU went up to 175 and fluctuated above 100 for three full minutes before leveling off. 65 temp files were created during this time. I opened the NIV and the same thing happened for two full minutes, again creating 65 temp files. Is this normal behavior? I wouldn't expect to see this just from opening up on resources.