Will you be able to get adsense approval you have some other advertisers in your site e.g. adbrite, clicksor etc.? Thanks

You can get but do not use them because it is against google policy to use ads which are looking same like adsense

I dont if such problem its exist. I think guy from SeoChat.com knows pretty good about this issue. He has a lot of ads on its site. May be he knows the rules.

yes, i think you can get approval(if your site meet requirements)
but you will get banned by adsense if you use content-targeted ads(such as adbrite) on the same page as google adsense..

i think you can use clicksor(not sure about this)

Better remove them first before you are going to apply for Adsense. You won't be needing them anyway when Adsense will approve your account. Goodluck mate!

Get them off until you get an adsense account. You can then put them back once you have adsense ads appearing, thought I wouldn't recommend it.

Yes, You can get. If you want to be in safer side then better to remove those ads before applying for Google Adsense.

I don't see anywhere in the Term & Conditions that says you can't but better go on the safe side.