Firstly, can we clarify the terminology (because otherwise confusion can arise): a podcast is the overall collection of episodes, and I assume that you are asking about missing episodes.
It's not really possible to comment unless you would like to publish the URLs of both your feed and the Store page - this latter can be found by control-clicking on the podcast image (or where it should be) - and choosing 'Copy link'. Please include the http:// in both cases to make the links clickable.
Your podcast, located at http://thelensgroup.info/WP/?feed=podcast
you will be able to access it with the URL below.
See the link above:
Plain and simple just don't use dropbox for your podcast files or RSS feed hosting if you actually want your podcast to work well with iTunes and iOS devices.
Dropbox is not meant for podcasting. There are many discussions about this on the forum boards - they all end the same way - dropping dropbox - and getting a real podcast host that can handle byte-range requests.
You are likely to have problems with any free service. They have to make a profit somehow, usually by adding advertisements to your web pages - since they obviously can't do this with media files, and a popular podcast will consume a lot of bandwidth, they have no interest in providing this service. Most handle it by providing an embedded player or a download page, and neither will work in a podcast.
Your ISP, who provide your internet connection, may provide some web space you could use.
Well, I've purchased hosting service from Godaddy, but when I'm trying to upload the files which some of them excess 100MB it says the file is larger than allowed :(
You'd say uploading them on that host will work fine right ?
You'll have to take that up with GoDaddy. I wasn't aware that they placed a maximum (I have web pages and media on GoDaddy but nothing that large) but their Help pages should make it clear, and I've found them helpful when ringing them.
HassaN-Kun - check out libsyn.com - it is a pay for podcast host. There is no file size limit as long as it is within the size of the plan you choose - with the max plan being 1,500 MB per 30 day window for uploads.
let me know if you have any question about libsyn - rob at libsyn dot com