interesting CAR related crashes in 12.0(14)S

Hello, Does anyone know of any "interesting" bugs that are triggered on GSRs with CAR active running 12.0(14)S, preferably S3? The simptoms are

40% packet loss with the aggregate gige traffic being under 100Mbit/sec. The total number of VLANs that GSR sees is about 100...

Alex --