Huh, you're right. I never realized. Informal experiment, Linux Mint: - 0.7G mem used, no FF, 1TBird, 1 URXVT - 1.1G with 1 FF an one tab - 1.2G with 10

Huh, you're right. I never realized. Informal experiment, Linux Mint: - 0.7G mem used, no FF, 1TBird, 1 URXVT - 1.1G with 1 FF an one tab - 1.2G with 10 FF, one tab each - 1.2G with 1FF and ten empty tabs - 1.37G with 1FF and 17 active tabs.