From the Aer Lingus site today (under Help Inquiry, Portable Electronic Equipment):
Portable Electronic Equipment
Portable electronic equipment may interfere with aircraft equipment, creating a potentially hazardous situation. With safety as a priority we pay particular attention to the following:
Mobile/Cell Phones:
These units must be switched off when aircraft doors close, or as instructed by a member of Cabin Crew. After landing, when the aircraft is parked, the engines shut down and the doors have been opened, the use of mobile phones is permitted. At all times, however, please comply with the instructions of the Cabin Crew.
Permitted in-flight but not during taxi, take-off, initial climb, approach and landing:
Laptops with CD ROM or DVD drive, palmtop organizers. Handheld Calculators without printers. Portable audio equipment (e.g. walkman, CD player, Mini disk player, ipod and MP3 player). For the comfort of other passengers these devices should only be used with a headset. Computer games (e.g. gameboy). Peripheral devices for handheld computer games are prohibited at all times (e.g. supplementary power packs connected by cable). Video cameras and recorder including digital equipment. Digital cameras. GPS handheld receivers. Electric shavers. Electronic toys (excluding remote controlled).
Devices prohibited at all times:
Devices transmitting radio frequency intentionally. Walkie talkies. Remote controlled toys. Display units with cathode ray tubes. Wireless computer equipment (e.g. mouse). PC printers. DVD, CD writers and mini disk recording mode. Digital camcorders when using CD CD write facility. Portable stereo sets. Pocket radios (AM/FM) TV receivers. Telemetric equipment. Bluetooth devices and devices that use "blueberry" technology are not permitted. The use of wireless LAN (WLAN) is not permitted. Laptops with built in WLAN (e.g. Cnetrino) may be used during the flight provided the WLAN is turned off and subject to the restrictions associated with the use of Laptops detailed above.
Devices that can be used at any time:
Devices powered by micro battery cells. Devices powered by solar cells. Electric watches. Hearing Aids (including digital devices). Pager (only receivers). Heart pace makers.