audio latency on macbook pro and tascam us-1641

[n3wr3c0rd]

I'm having an issue with latency using:

macbook pro 2.3 ghz, 3GB RAM, 120 GB hard drive
logic pro 8
tascam us-1641 fully updated (1.01 firmware, and 1.0 OS X driver installed)

When I listen to live sound, there's about a 1/2 second delay. I've tried adjusting the adjusting the buffer size to a lower setting (below 256), but then I start to hear wierd noises, or nothing at all. Any suggestions?
Thanks,

CH

[On the Loose]

It's not often you hear a mac user complaining of latency with logic. not that I haven't assumed that was the case. here's my opinion, people giving rave reviews about digi, m-audio.protools and logic, don't play musical instruments, and hence only ever record in midi. I've heard many stories of people recording live with pro tools and logic, but as yet no one has been able to show me this feat, only tell me that this latency that thier getting is confusing. Before you panic download a free studio, quartz audio master or kristal are likely candidates, try recording with these and if you get no latency you know where the problem was all along.

[steveintampa]

Try deleting the Logic preferences file in User folder (Library/preferences).
Don't be afraid to delete it. When you open Logic again it will create a new preferences file.
If you changed some preferences before, than in Logic go to preferences and put your settings again.

...copied from a reply in Apple forums