I'd backup my cards onto CDs or DVDs in a cybercafe (being sure to verify the data afterwards), then to be REALLY safe, I'd post them back home.
Also, make 2 copies of each CD/DVD - one to send to a home address and the other to keep with you. I sent a DVD of images home once which never arrived. Fortunately, I'd made another copy which I'd sent to my sister which did arrive.
I've been an ex-pat for 6 years or so and have lost count the number of letters/parcels that have gone missing in both directions.
Panasonic G3: 9-18mm, 14mm, 20mm, 45mm