What is an 'acceptable' Total Execution Time?

[eluser]Lone[/eluser]
Just thought I would put the question out to everyone else here on what they think is an acceptable Total Execution Time for a page.

I am just getting a bit concerned on the time taking to load one of our pages on a clients site - its all ok for now but it there was some heavy track I fear overloading the server.

In my opinion I think an acceptable time is below 0.100 - the page in question is around 0.075. I might be being a little tight here but this is on a server that isn't being worked all that hard, for now, but if it was I am concerned about this execution time.

What times are you seeing on your site?