Firefox crashes'

Last two days, and four times Firefox(on Windows XP) has crashed! And iam also unable to report the problem using the Mozilla feedback agent. The feedback agent tries multiple times but fails to send the report. As i normally have multiple tabs open during each crash, iam unable to pinpoint whether the crashes are site-specific or whether iam seeing a general stability issue. Side Note : By any chance, Is "Stable software" an oxymoron?