Yes, Safari does occasionally crash. One way to minimise the problem is to (a) close Safari down completely. Double tap the Home key, when in any app other than Safari, press and hold any icon in the multi-task bar until they start to 'jiggle', then tap the 'X' symbol on the top left-hand corner of the Safari icon. This will close the app completely.
(b) another thing that helps is to completely switch off the iPad by pressing and holding the Power button until the slider control appears, accepting the offer to switch off then, when the screen has gone completely blank, switch on again by pressing and holding the Power button until the white Apple logo appears. The iPad will then restart; it takes a while, so be patient.
This last procedure is recommended by Apple and they suggest you do it periodically anyway.
Hope this helps - it has stopped my Safari crashing when visiting certain sites.
Tim