Thanks Giradman I tried your suggestions but it has not worked. Yes I have an iPad2 with IOS5. It worked after IOS5 upgrade as well. Same issue as Alexbalt.
Currently I did what you stated as well as this. Clear History/cookies, reset iPad.
Update: I did a RESTORE from Backup, this made my iPad2 like new, and yes now Google+ works in Safari. However now I cant pair my ipad to my iTunes. So I have a real basic iPad2 now.