SYMC: Disk Full

I have SYMC PROTECTION SUITE ENTERPRISE EDITION 3.0 on Windows Server 2003 R2 with 30 clients.

My C: drive if full on server where SYMC is installed. Now I am in panic and need real support.

12GB ==> C:\Program Files\Common Files\Symantec Shared\SymcData
2.5GB ==> C:\Program Files\Common Files\Symantec Shared\VirusDefs

15GB ==> C:\Program Files\Symantec

Can I remove any thing from above folders?