You are not alone. G4 800 DP with 1.25 G ram here.

In article <traul-D55EBA.09012629062003news.wanadoo.fr>, Pierre
<traulfreespam.fr> wrote:
> When I've just launched Safari, If I click on a menu located in the
> bookmark bar, there is a very long delay (between 10 and 20 sec !)
> before the menu drops down. But this happens only the firts time I click
> on a menu located in the bookmark bar.
>
> Is there any interaction with another application ? Is it a bug ? Am I
> alone to notice this problem ?
>
> I've seen on google groups that other users have notcied smal delay for
> the bookmark menu but not in the bookmark bar. In my case it's a long
> delay and it's in the bookmark bar.
>
> I use OS X.2.6 on iMac G4-800 with 512 Mb Ram
>
> Thanks