Looks like Firefox 3¹, all the way back in 2008! There is a good description of fixes and workarounds on LWN². ¹ http://shaver.off.net/diary/2008/05/25/fsynce

Looks like Firefox 3¹, all the way back in 2008! There is a good description of fixes and workarounds on LWN². ¹ http://shaver.off.net/diary/2008/05/25/fsyncers-and-curveballs/ http://shaver.off.net/diary/2008/05/25/fsyncers-and-curvebal... ² https://lwn.net/Articles/328363/ https://lwn.net/Articles/328363/