Aye, 51_3 made no difference for my iGo either.

But until the issue is formally addressed, there are a few ways to work around it. Comment #14 (linked below), in particular, links to an easily installed patch that sets the initial delay nicely. Austin's workaround (in earlier comments) is more complicated, but allows you to set the initial delay and the delay between repeats. I've used both, and would say the simple #14 patch is probably the way to go for now.

https://bugs.maemo.org/show_bug.cgi?id=2166#c14

Some votes for #2670 might draw attention to the need for proper repeat controls in the bluetooth keyboard control panel applet:

https://bugs.maemo.org/show_bug.cgi?id=2670