seamonkey does not release memory when tabs and windows are closed and it use too much RAM

[markor]

Binary package hint: seamonkey

Seamonkey 1.1.14 from ppa on Hardy/8.04 LTS amd64. (Same goes for 1.1.13 na 1.1.12 etc)

I currently have just one windows open, no additional tabs and seamonkey is using more then 1GB of RAM.
I started seamonkey,like , in the morning with multiple tabs, used mail etc, it quickly grows to more then 500MB.

I used it all day in multiple windows and many tabs, but I closed it now. i have just one window,
but seamonkey keeps using more then 1GB of ram (I have 2GB on machine, thanks god).

So I think it is a serious bug that seamonkey does not release memory to the system after closing
tabs and windows.
I suppose it is upstream, also.
I don`t know if it is flash related or something but is have the same enourmous, never getting lower, memory demands, no matter what flash version is used.

 PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
10708 user 20 0 2084m 1.0g 25m S 2 55.7 142:57.98 seamonkey-bin

[Nomax (nomax)]

Same problem with SeaMonkey 2.16.2 on Ubuntu 11.04.