There were frequent interruptions by commercial breaks. An Internet blackout or outage can be caused by local signalling interruptions. An Internet blackout or outage can be caused by local signaling interruptions. She compared the action with brief interruptions to road and rail networks during emergencies. The protests were troubled by abrupt interruptions and altercations. The DVDs allow the material to be shown complete with Elvira's interruptions or uninterrupted. This allows GOMS to deal with unexpected interruptions. The Qing continued to hold Kashgar with occasional interruptions during the Afaqi Khoja revolts. The call became infamous after being plagued with technical problems and interruptions. Production suffered multiple interruptions for several reasons. This reduces the number of BUSY toggles and the resulting interruptions on both sides. They should be used for the entire time prescribed without interruptions. Drug holidays (or "structured treatment interruptions") are intentional discontinuations of antiretroviral drug treatment. Widespread power interruptions, landslides, and flash floods were also reported. These customized stations also allow listeners to play music without DJ interruptions.