28.09.2013, 21:54
This is the reason of that:
1. Server anti-flood wrongfully kicks the connection therefore it says 'You are banned from this server.'
2. Server is having some issues, needs to be restarted.
3. Re-connecting fast. ^ point no # 1
4. Report their server owners, your IP might be blacklisted or in the range with other banned IP.
5. You are banned by the admins, stop crying!
If that still doesn't helps, probably SA-MP bug.
EDIT: Which client version are you using? And that server?
1. Server anti-flood wrongfully kicks the connection therefore it says 'You are banned from this server.'
2. Server is having some issues, needs to be restarted.
3. Re-connecting fast. ^ point no # 1
4. Report their server owners, your IP might be blacklisted or in the range with other banned IP.
5. You are banned by the admins, stop crying!
If that still doesn't helps, probably SA-MP bug.
EDIT: Which client version are you using? And that server?