First make sure that your question doesn't have to do with Akeeba eXtract Wizard. Such questions are answered here. Asking them in the context of Akeeba Backup software will simply waste your time as we will point you back to the page we just linked you to.
Another good idea is searching the tickets before posting. With several thousands posts by the Lead Developer alone, the chances of having bumped on a completely new and unknown issue which hasn't been addressed before are infinitely close to zero. Searching takes 15 minutes and may lead to immediate results, waiting for a ticket reply will take 12 to 48 hours, each time you post a reply.
You can use Google to search for an answer very quickly. Go to
Google, type a few keywords of your problem and append
If all else fails and you are a subscriber, please post to our ticket system making sure that you include the following information:
Akeeba Backup version number ("latest release" is not a version number) you are using or which was used to create the backup archive
If you have a backup issue, ZIP and attach the backup log file. You can download the log file by going to Components, Akeeba Backup, click on View Log, select the backup origin (that's "Back-end" unless you seek assistance for a remote, front-end or CRON backup) and, in the new page, click on Download Log. Take that text file, put it in a ZIP file and attach it to the ticket. Attaching raw text files, copying and pasting text from the log file, using an external file download service (such as RapidShare) or using other archive formats to deliver your file (e.g. 7-Zip, RAR and so on) will result in your post being deleted without a reply.
Exact Joomla! / WordPress version number. Again, "latest" is not a version number. Something like 1.5.22 or 1.6.0 is.
PHP version number
MySQL version number
Which hosting company you are using. Some hosts have known issues and workarounds; telling us may help us help you much faster!
If you can't explain the problem clearly (as a test, ask someone else to read it and ask them what they understood) post one or more screenshots of the problem. A picture is worth 1000 words and may make the difference in solving your problem!