我的内存是不是泄露了？一个页面，开着15分钟就500MB+

AutoProxy (0.4b2.2011041023)
Personal Menu (5.0.6)
Element Hiding Helper for Adblock Plus (1.1.2)
NoSquint (2.1.2)
Easy DragToGo+ (1.1.5.1)
Status-4-Evar (2011.07.20.21)
userChromeJS (1.4)
新同文堂 (New Tong Wen Tang) (0.4.0.9.1)
Stylish (1.2.4)
Image Search Options (2.0.2)
Configuration Mania (1.14.2011103001)
Adblock Plus (1.3.10)
Download Statusbar (0.9.10)
Tab Mix Plus (0.3.8.6)
Mason (0.3.7.9)
PopVideo (0.5.2)
Foobar (1.6.2)
TidyRead (0.4.0)
TrayHotKey (0.3.4.9)
Show Location (0.7.1)
Greasemonkey (0.9.13)
xThunder (1.1.2)
DownloadHelper (4.9.7)