ttyS2: corrupt characters after starting up

Hello group,

I have the following problem: right after starting up the BeagleBoard
with the latest Angstrom distro (11 jan) I sometimes have corrupted
characters on the ttyS2 port. This behaviour vanishes after 10 minutes
or so, so I think it is a timing problem, which disappears after the
beagle is warming up. Does anyone experiences this same problem and
what is the solution? I have a B4 board which I modified by removing
the particular capacitor according to the manual.