Windows 7: Event manager errors re Windows Search

I am getting repeating errors in event manager re windows search as follows:

The Windows Search Service cannot load the property store information.
Context: Windows Application, SystemIndex Catalog
Details:

The content index database is corrupt. (HRESULT : 0xc0041800) (0xc0041800)
The Windows Search Service is starting up and attempting to remove the old search index {Reason: Index Corruption}.

and,

Log Name: System
Source: Service Control Manager
Date: 7/30/2012 3:05:28 PM
Event ID: 7024
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: Home_Desktop
Description:
The Windows Search service terminated with service-specific error %%-1073473535.
Event Xml:
<Event xmlns="Error">
<System>
<Provider Name="Service Control Manager" Guid="{555908d1-a6d7-4695-8e1e-26931d2012f4}" EventSourceName="Service Control Manager" />
<EventID Qualifiers="49152">7024</EventID>
<Version>0</Version>
<Level>2</Level>
<Task>0</Task>
<Opcode>0</Opcode>
<Keywords>0x8080000000000000</Keywords>
<TimeCreated SystemTime="2012-07-30T22:05:28.842083100Z" />
<EventRecordID>548524</EventRecordID>
<Correlation />
<Execution ProcessID="1008" ThreadID="1052" />
<Channel>System</Channel>
<Computer>Home_Desktop</Computer>
<Security />
</System>
<EventData>
<Data Name="param1">Windows Search</Data>
<Data Name="param2">%%-1073473535</Data>
</EventData>
</Event>


Also...I'm getting this error re "crash dummp":

Crash dump initialization failed!



Log Name: System
Source: volmgr
Date: 7/30/2012 3:04:59 PM
Event ID: 46
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: Home_Desktop
Description:
Crash dump initialization failed!
Event Xml:
<Event xmlns="Error">
<System>
<Provider Name="volmgr" />
<EventID Qualifiers="49156">46</EventID>
<Level>2</Level>
<Task>0</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2012-07-30T22:04:59.844033700Z" />
<EventRecordID>548450</EventRecordID>
<Channel>System</Channel>
<Computer>Home_Desktop</Computer>
<Security />
</System>
<EventData>
<Data>\Device\HarddiskVolume1</Data>
<Binary>0000000001000000000000002E0004C001100000010000C000000000000000000000000000000000</Binary>
</EventData>
</Event>

Do you use ccleaner?

yes

CCleaner has caused this problem in the past. Check this thread.

The content index database is corrupt. (HRESULT : 0xc0041800) (0xc0041800)