@Chris: You can try to untick "use hardware acceleration, if available" and "smooth scrolling" in Firefox' settings (navigate to Advanced tab=>General sub tab=>Browsing). At least for me, this reduced the frequency of lockups.
@Chris: You can try to untick "use hardware acceleration, if available" and "smooth scrolling" in Firefox' settings (navigate to Advanced tab=>General sub tab=>Browsing). At least for me, this reduced the frequency of lockups.