If the system seems to be slow or CorelDraw crashes frequently, it may be due to excessive .tmp files. These files are created when you import, copy/paste, or print. These files should be deleted regularly—if not, they can be like hair in a drain and clog up the entire system.
If you have excessive .tmp files on your Windows system, here is what you need to do:
Hold down the Windows key—this is the key between the Ctrl and the Alt keys to the left of the space bar. While holding this down, tap the letter R. This will open the Run command box.
Type "%tmp%" and tap the Enter key. When the folder opens, select one file and while holding the Ctrl key down, tap the letter A. This will select all. Finally, tap the Delete key on the keyboard. If a message appears that the file is in use or open, select the check box that says, "do this for all items" and click Skip. Once all the files that can be deleted are, close the .tmp folder.
If you are deleting a large number of .tmp files, it is suggested that you do a disk defragmentation as well. To do this, tap the Windows key and then type “defrag.” You should see Defragment and Optimize Drives. Select it and follow the prompts.
—Roger Wambolt, CorelDraw