HI There
For any of you E620 users out there (hordes of you that there are) who would also like to use Aperture, Adobe have a release candidate of Adobe RAW converter 5.4, which convert the E620 files to .dng files which are read very nicely by Aperture.

Here is the link:

ACR 5.4 Release Candidate

As it also works with the D-Lux 4 files, now producing a small .dng file (without lens correction information, but readable by Aperture). I'm assuming it'll also work with G1 files, but I'll give that a go later on this evening.