The browsers are a well known problem. What you see are not memory leaks per se. Firefox or Chrome (I don't know about Safari but I guess it works the same way) intentionally don't release the memory when it believes that it will need it and that you have enough. So this memory consumption is more or less dynamic and depends on the amount of memory that you have in your Mac. Lion will not change anything, on the other hand Safari 5.1 that comes with Lion is (for me at least) significantly faster than 5.0x
Jul 20, 2011 5:09 AM
There was once a shmem patch submitted to the QEMU dev list, but it got dropped in favor for a vnc solution. As I'm not satisfied with vnc speed, I took a stab at the shmem patch. Shmem on OS X, it's a no-go. Shmem would be the most geleagnt way of creating shared memory.