I've been playing around in Chromium 15.0.854.0 to avoid unwanted tracking cookies.
First I tried WinPatrol filter. But even though the filters I entered kept that cookie from coming back I kept getting other tracking cookies with different names.
Then I tried deleting all cookies and relying on LastPass for login. This forced me to login manually in LastPass.
So I changed the setting to accept local cookies, logged into LastPass, then changed the setting to saved cookies for this session only. That fixed having to log into LastPass.
Now to my current stage. I deleted all cookies, set Chromium to accept local cookies. Logged into LastPass. Then I went to the sites on my Speed Dial and logged in with Chromium set to accept local cookies. Close Chromium. Open Chromium, it logs into LastPass. Now I change the setting to accept local cookies for this session only.
After all that I have the situation where LastPass logs in at Chromium startup. The sites I visit most are already logged in from the saved cookie. Less visited sites I rely on LastPass to log me in. Fairly good compromise.
Unfortunately every browser has different quirks. Fortunately it seems Firefox will auto log on to LastPasss without relying on a cookie. It would be a lot simpler if LastPass would do that with all browsers. But I guess they have to contend with the quirks too.
Just thought my experience may help those struggling with chromium cookie filter hell