Car: Jag XF 3.0
Join Date: 10th April 2006
Thanked 2,774 Times in 824 Posts
View your posts is not very clever on this software - it just lists the threads in which you have posted, and doesn't tell you whether you've subscribed to email updates or not. So if you "stop watching", you will not get email updates, but because you still posted, it still appears in the "view your posts" list.
All will be better when phpBB v3 comes out - but who knows when that will be (it has been years in the making!)