Problems with Mcafee firewall plus

I recently started having problems with Mcafee firewall plus.  It started out maintaining a "yellow light" and continually asking me to verify my subscription even though my subscription was current.  I contacted Mcafee and a tech said they were aware of the situation and were working to fix the problem which should be taken care of on the next update.  That problem was but now I can't access features such as view summary report, application list, utilities, about personal firewall plus etc..   Before I had no problems accessing these features.

I have contacted Mcafee seven times and followed their instructions.  I have uninstalled and reinstalled using the add/remove function as well as clean install per their instruction.  Each time I ran a virus scan and was told their was no viruses found even after I ran virus scan in DOS per their instructions but to no avail. 

I was told they would e-mail within three buisness days with more instructions but so far I haven't heard anything.

I also began to have problems with system restore and contacted Dell and followed their instructions and did a repair which seems to be successful.

Disk cleanup has also stopped working.  I purchased this system in January of this year and Mcafee came with it.  I'm really not liking Mcafee at this point

I know this is a long post but I need help and I'm getting frustrated with all of this.  I am considering doing a complete reinstall of Windows Xp to see if this will correct anything.

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