Yes what version. There are issues with the latest Cura with:
1) virus scanners - they try to scan the executable part of cura called "steamEngine.exe". You might want to add it to your virus scanner exception list. Or just turn the stupid thing off, uninstall it, and burn the disks.
2) SD card auto scanning. The new Cura searches for SD cards automatically. Some people have dozens of USB devices or other issues that makes this code run very slow. You can disable this feature in Cura.
What version do you use?
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