Emails with embedded image show only =20

Question

I am seeing this issue across multiple iPhones with iOS 4.3.x and 5.0. It is very inconsistent. I have seen the same email go out to multiple users in a group and some can see the embedded image correctly while others only see the following in place of the image:
------_=_NextPart_002_01CC8F42.DA025060
Content-Type: text/plain;
   charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
=20
=20
=20
=20
This tells me the sender isn't formating the message in a way the recipient cannot read it. It seems to be an encoding issue. The email will display fine in various email clients but not on the iPhone. The same email can later be sent again and it will work fine.
The iPhones' email accounts are setup as IMAP and the mail server is running Exchange 2003. I'm sure this will go away once I upgrade the server to 2010 and use ActiveSync with an Exchange account instead of IMAP, but I need to make it work correctly for now.
Is anyone else experienceing this issue and if you are, what server, account type, iOS are you running?
Any help would be greatly appreciated.
Thanks!

Answer 1

I have the same problem with FF 14.0.1 on a freshly reinstalled Win7 32:
I have a 100Mbps cable connection, but get a '''ridiculous 4-5 Mbps''' out of FF while the latest versions of Explorer and Chrome gives at least 75Mbps...
All tests have been done with virus protection on as well as off (the latter is something I loathe doing) and with two different speed tests, one of them being speedtest.net. The results are conclusive: The problem clearly rests with FF. So: What in Heavens name has happened to my longtime favvo browser? At the moment it is quite useless and I am at my wits end.
I don't particularly want to, but as of tonight I'm transferring all my bookmarks to Chrome as a hopefully temporary measure.