Slow saving to excel

Recently, saving any data on excel is taking longer and longer. Now it is up to 30 seconds. I use 2007 Excel


Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft Windows XP Home Edition, Service Pack 3, 32 bit
Processor: AMD Sempron(tm) 3000+, x86 Family 6 Model 10 Stepping 0
Processor Count: 1
RAM: 959 Mb
Graphics Card: VIA/S3G UniChrome IGP, 64 Mb
Hard Drives: C: Total - 33584 MB, Free - 8150 MB; D: Total - 4561 MB, Free - 354 MB;
Motherboard: ASUSTek Computer INC., Kelut
Antivirus: AVG Anti-Virus Free Edition 2012, Updated: Yes, On-Demand Scanner: Enabled