Gmail

It's clearly a conflict with an extension, but I can't figure out which one. When I launch FF in Safe Mode I have no issues at all.

I've disabled Firebug, and have turned off Greasemonkey. I've heard that perhaps it is the Web Developer extension -- but honestly, I refuse to turn that one off. I use it constantly.

Any ideas?

All of a sudden, whenever my Mail.app mail client goes to download email from my gmail account, it can only get one message at a time. I tried switching pop servers from pop.gmail.com to pop.googlemail.com (and back), which in the past has helped when this problem has come up, but no go this time.

It's really frustrating! I usually get 20-60 messages every night that it now takes almost a half hour to pull off the Google server. Anybody have any ideas about what can be done to fix this on my end, or is it something that's up with the Gmail service?

Emails of information for non-related clients are clumped together because they come from the same source, making it easy to miss new, important info emails and impossible to dump all the duds without also deleting the few important ones. If conversation grouping can't be turned off and on by the user or eliminated, I have to dump Gmail, as have many others I saw on another website who also bitterly complained about this threading feature (bug?)