With Amazon purchases, after 2 days since: peak delivery time again from Amazon. Packaging totally ok. Came as Postbrief (blister in a cardboard cover).
Installed memory in the Toshiba Satellite Pro S300-10F (in addition to 2 GB Samsung RAM and 2GB of Corsair was immediately recognized no problems so far - not even with extensive benchmark test - neither under Windows XP Pro under Windows 7 Home.