While I use google Reader and appreciate it very much, I find some small problems with it. Sometimes it shows the already items as unread items. I have to waste some time browsing over them. Also, sometimes, the read items are not read often. I am using firefox 2.0 with a number of plugins installed. I don't know if the plug-ins create some problem or it is the firefox 2.0 which has not been dealt properly by the google team as yet. Just hope that such problems will only decrease with time. While myself in a job where you have to spend considerable time doing small fixes, I can understand such problems take time to be identified and fixed.