Update requires password re-entry (in CLEAR TEXT!)

The first time I did a CVS update (from the "CVS" menu), I was asked to enter my password in clear text - a big problem from a security standpoint.

It looks like my password was cached after that.

Yes, it was impossibble to hide it, we tried, but it is ask only 1 time.
Only if someone is behind you can see it.

I'm being asked for my username and password every time, no matter what I try to do. Any idea why it's not being saved/cached?

I'm using DW CS3 for Mac and the trial version of the extension.

could be some rights problem? the user what you use, have enough write into own folders?