I bought a new W7 computer 3 weeks ago. Since W7 doesn't come with
mail software I installed thunderbird.

About half the time I send email it hangs for 20 seconds and then
tells me it couldn't find the STMP server.
When I try sending again it is fine. It finds it the first try about
half the time, and the second try all the time.

My wife's vista computer doesn't have this problem on the same server
with OE.

Any suggestions?