Posting this in case anyone (or anyone who joins) has the same problems i have had with lag ... the minimum spec on the box is a lie
I had 1G of ram, and I got constant lag and RvR was unplayable, even with all the gfx turned down. Now I have 3G and its fine (but I know 2G would do the trick as well). I know they are trying to improve the memory footprint (cos it sucks) but right now this is how it is.
This is on XP btw, not sure whether the 2G minimum spec on Vista is too low as well.