Related Clues:

• Crawling creature
• Small crawling creature, now in computer programs
• Listening device, insect or electronic fault
• An informal malfunction
• Insect, or flaw in computer program
• Defect in a computer program
• Malfunction or snag
• Bug, fault in a system
• Defect in computer program
• It's snug in a rug (3)
• It's snug in a rug
• Insect or defect in a computer program
• 'Bug, fault in a system (6)'
• Small fault preventing proper working
• Insect or defect in a computer program