5000 actuations is very low.
Approx. shutter life on entry level cameras like Canon 350D, Nikon D40, D50, etc: 50,000-75,000 clicks
Mid-level cameras like Canon 40D, 5D, Nikon D200, D300, D700: 100,000-150,000 clicks
High end professional cameras like EOS-1D, Nikon D3: 150,000+