Post the code you are using, the exact exceptions and details of the leaks.
NSError** pError;
NSData* m_pRecData;
NSURL *pUrl = [NSURL URLWithString
"http://www.apple.com"];
NSURLRequest* pRequest = [NSURLRequest requestWithURL
Url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0];
NSURLResponse* pResponse = [[NSURLResponse alloc] initWithURL
Url MIMEType
"RFC 2822" expectedContentLength:100 textEncodingName
"name"];
m_pRecData = [[NSURLConnection alloc] sendSynchronousRequest
Request returningResponse:&pResponse error
Error];
*** -[NSURLConnection sendSynchronousRequest:returningResponse:error:]: unrecognized selector sent to instance 0x407cc0
(gdb) continue
2008-09-15 16:09:55.413 myhttp[929:20b] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[NSURLConnection sendSynchronousRequest:returningResponse:error:]: unrecognized selector sent to instance