The 17 July 2007 build (4273) is out.

[rhf]

so, how do you disable that popup hint?

Settings -> Editor -> Code Completion -> Tab "Code completion" -> deactivate "Display info when hovering mouse over a token".
With regards, Morten.
Ps.: BTW: now that I have compiled a more recent version of C::B this stroke me, too... quite annoying. :-(

I just downloaded the nightly build 4281 (Windows), and it has the same problem. Thank you for telling us how to disable it.
Before I saw this post, I tried Settings -> Editor -> Code Completion -> Tab "Code Completion" ->  activate "Disable code-completion".
Surprisingly, this did not fix the problem!  Every now and then when I scrolled with the vertical scroll button, the tip would re-appear.
Bummer.

[killerbot]

nightly of 20 july should have some improvements in this area, please try it out to see if the problem persists