People scope no longer finding items

Hello,

I have an issue with the People scope saying it has 0 items and within SharePoint search where it doesn't find anyone. Last night before leaving work the people search was working fine and returning search results within the people scope and the people scope had 1500+ items within it which is the correct amount. When I returned to work this morning I found that the people search was no longer finding any results and when I checked the scope it said it had 0 items, so I cleared the index and ran a full crawl, again nothing was placed into the people scope.

Now there are no errors but there are a lot of warnings, which relate to each user profile and other pages within the MySite such as Person.aspx:

http://sharepoint-mysite-dev:80/Person.aspx?accountname=DOMAIN\is00001

The content for this address was excluded by the crawler because this item was marked with a no-index meta-tag. To index this item, remove the meta-tag and recrawl.

Now from last night to this morning nothing has been changed on the SharePoint servers as I'm the only person with access to them, I've checked the settings within MySite and all the profiles are still there and the MySite site works correctly. I've double checked the Crawl Rules, Log, Content Sources and the Scopes and nothing has changed.

Within the MySite I've also checked under Site Actions > Site Settings > Search and offline avaliability to make sure indexing is enabled, I've also rebooted the servers within the farm to see if that would resolve the issue. To give further detail, we currently run an incremental crawl every 5 mins and a full crawl at 0:00am every night. If anyone could help me here it would be appreciated, if you require further information just let me know.

Thanks